m z m F 777 ,3 Q4 m BANCROFT LIBRARY < THE LIBRARY OF THE UNIVERSITY OF CALIFORNIA PROSPECTUS eac3, OF THE GENEVA GREY COPPER, SILVER AND GOLD MINING AND MILLING COMPANY, OIF OOLOI2.A.IDO. K. O. Polkinhorn, Printer, Washington, D. O. PROSPECTUS S'CK. 1BS3 OF The Geneva Grey ComieUilferaiiiefllilMiiiiiaiiiMilliiCo, OF COLORADO. This Company is formed for the purpose of acquiring and working valuable mineral properties situated at the head of Geneva Valley. Geneva Valley is sixty-four miles from Denver, and opens on to the north fork of the Platte Valley at Grant, where there is a station on the Denver and South Park Eailway. The property is composed of a number of mines and min- ing claims, including the well-known Revenue lode, which crops out and crosses the continental water-shed. This mine, together with the group of lodes below it on the At- lantic slope, came into the possession of the parties owning the Britannic tunnel, and those owning the Leviathan tun- nel, several years ago. Acting under the advice of mining experts, it was decided to suspend active working from the surface, and to prove the lodes by tunneling from the moun- tain side. Accordingly, the two tunnels were started about one thousand feet apart. The Britannic tunnel cutting, in its course of 1,025 feet, no fewer than fourteen silver and gold-bearing lodes, and the Leviathan intersecting, in 800 feet, 13 lodes, which are undoubtedly extensions of the former ; together they may well be called the Geneva Group. Little more has been done upon these lodes than to prove their value, but sufficient has been accomplished to dem- onstrate their vast paying capacity when fully devel- oped, and also to continue and increase their present ore producing capacity. The surface claims are ihe Ee venue, Baltic, Celtic, Repub- lic, Oceanic, Gaelic, Adriatic, Murphy, Hugh Kelley, Best, Dudley, Blue, Little Eailroad and the Kelly & Dudley lodes, for all of which United States Government patents have been issued, also the Jurassic, Japanic, Occidental and Graphic all secured in accordance with the United States mining laws, and embracing with the tunnel rights an immense mining territory. Included in the purchase is the property embraced in the following inventory : This Company takes all the ore broken at the mines, estimated at 300 tons, and slag at the smelting works, about 300 tons. .The mines have been reported upon by several mining engineers and experts, under whose advice the improve- ments and developments have been made. Formerly, Mr. E. 0. Old, M. E., of Georgetown, was employed by the then owners of the Eevenue, and in a careful report gave an un- hesitating opinion of the great value of this mine and of the merits of the other claims. Later, Mr. Thos. Belt, F. G. S. M. E., of London, England, examined the Eevenue and other property as far as then opened, and advised push- ing the Britannic tunnel in preference to working from the surface, concluding his report as follows: "Altogether, I consider the Eevenue mine, both as regards its production of valuable ore and the great advantages the district offers for the erection ot reduction works, the most promising un- dertaking that came under my notice in Colorado, and am satisfied that if judiciously managed will yield enormous profits." The lodes in the Leviathan tunnel have not been ex- plored as much as they have been in the Britannic, but as in most instances they will be found to be continuations of the veins cut in the Britannic tunnel, the report and de- scriptions apply generally to the whole property. A record is attached of some mill runs and samples. The extensive forests in Geneva Valley are becoming valuable, and are practically under the control of this com- pany. Lumber is being shipped to Denver from a point twelve miles below Grant, and accessible timber is becom- ing daily more scarce. Rough Colorado lumber is worth in Denver $22.50 per 1,000 feet ; the freight from Grant would be about four dollars per thousand, leaving a wide margin for profit. Taken altogether, the combined interests present one of the most perfect and extensive mining properties in Amer- ica. Some of the directors visited the mines in October, and have every confidence, that after carrying out some fur- ther improvements, that the mines will be at once placed in a paying condition. They satisfied themselves thoroughly in respect to titles, and the correctness of the extracts and reports attached hereto, and have no hesitation in recom- mending the enterprise as one of the soundest and most promising mining investments in Colorado. According to purchase this company takes possession of the properties free from all debts or other encumbrances. DENVER, COLO., October %3d, 1883. General B. B. SIMMS, Washington, D. C. MY DEAR SIR : I submit the following as an inventory of buildings and personal property of the Geneva Grey Cop- per, Gold and Silver Mining and Milling Company: At Grant One dwelling-house 36X^0, second story 16X20, One chair. One cook stove. One parlor stove. One wardrobe. Two tables. Two carpets. One wash stand. One bureau. , One log barn 20X30. At Asterville One smelter building 40x40. One matte furnace and stack. Capacity 12 tons per day . One calcining building 40x45. One reverberatory furnace 20X40, Capacity 25 ton& per day. One crushing room 40x50. One Blake crusher, ten inch. Two setts Cornish rolls. One screen. One set of elevator boxes. One Howe's scale r large size. One saw mill building 40x40. Capacity 12 M per day. One 36-inch circular saw. One shingle mill. One jointer and cut-off. One steam engine and pump, 24 horse power. Full equipment of line shafting and pulleys, belting, etc. One barn 20x30. One superintendent's house and office 24X36, 1} stories, with lean-to 12x20, eleven rooms. One store room 16x24, with cellar. One scale house 10X12. One set of Fairbank's five-ton scales. One blacksmith shop 12x16, One ore house 16X40. Two houses for men 12x20. One Oertling button balance. One Oertling ore balance. One pestle and mortar. Two bucking plates. One cupel mold. One porcelain mortar and pestle. One burte. Six large plumbago crucibles and scorifiers. One assay furnace. One smelting furnace. One lot glass ware and chemicals. One desk. Three bedsteads, with springs, mattresses and beddiug. One hall safe. One cook stove. Two heating stoves. Ten chairs. One letter press. One center table. Two wash stands. 5 Two mirrors. One small bureau- One grindstone. One lot ore screens. Two extra pulleys. Six oil barrels. One cross-cut saw. Three carpenters' levels. Three carpenters' squares. Three iron wheelbarrows. 150 feet one and one-half inch rubber hose. One whim harness. Seven kegs of black powder. Twenty-six doors. Eight window sash. One set Fairbanks' scales. One chest carpenter's tools. One keg of nails. One saw gummer. One belt stretcher. Five hundred pounds of iron. 860 pounds drill steel. Eight pick eyes. One surveyor's chain. Twenty striking hammers. One hundred pounds bone ash. One hundred ore sacks. Fifty ore pockets. At the Mines One boarding house 24x40, with kitchen and store room 12X40, and lean to 12X36. One large cook stove. Two heating stoves. One parlor stove. Dishes, knives, etc., for twenty*five men. One tunnel house 16X16, with bunk-room 10X20 at Leviathan. One boiler-room 16x24, at Britannic. One blacksmith shop 12X16, at Britannic. One ore-house 16X30, at Britannic. One 35 horse power engine. Two 20 horse power boilers. One bolster. One large blower. One small blower. One whim. Three pair of bellows. One set blacksmith's tools. Two heaters. One carpenter's level. One Fairbanks' scales. One surveyor's compass* One surveyor's level. Three iron ore buckets. Six iron ore cars. Eight hundred feet T rails. 325 feet one and one-half inch rope. Three iron wheelbarrows. Ninety pounds drill steel. Two hundred pounds of iron. One whim house 20X30, at Kevenue. One bunk-room 16x20. One tunnel house 12x16, at Centennial. One log store room 16X20, with lean-to 12X30* Two log cabins. One log stable. Nearly all of the above property is in good condition and ready for immediate use. Some changes should be made in the arrangement of the buildings, and some additions to the stock of tools. Very respectfully yours, A. W. KELLOGG, Mining Superintendent. In addition to the above personal property there are nine lodes and several mill sites, and 480 acres of land at the town of Grant, on the South Park Branch of the Union Pa- cific Railroad, including that town and the depot, telegraph office and other buildings, and where the company have a large dwelling house, all with perfect titles beginning with United States patents, and 160 acres upon which the smelter, saw mill, and other buildings are located. WASHINGTON, D. C., October Zbth, 1883. To the Board of Directors of " The Geneva Grey Copper, Silver and Gold Mining and Milling Company :" Gentlemen : Having visited the mining property known as the Geneva property, situated at the head of Geneva Gulch, in Clear Creek, Park and Summit Counties, in the State of Colo- rado, and personally examined the same for my own satis- faction and that of others, lor the purpose of ascertaining its value, beg leave to submit the following report, which is substantially a copy of a report made by me to Hon. B. F. Jonas and Gen. John A. Logan. First. I submit the following copies of letters and pa- pers relating to this property, namely 1st. Letter of George Teal, a mining Engineer of Boulder, Colorado ; 2nd. Let;er of Hon. J. B. Grant, Governor of that State; 3rd. Letter of Geo. Rust & Co., owners of a recently con- structed Concentration works at Decatur, Colorado, and 4th. A letter of A. A. Egbert, the General Superintendent of the Colorado division of the Union Pacific Railroad Company. These letters explain themselves. Second. The result of my personal examination of these mines, and the property belonging to them. To begin that, I call your attention to the printed report made to Jno. W. Godfrey, by A. W. Kellogg, (copy herewith en- closed). This report, as to the amount and character of developemnt-work done in the mines, I found substantially correct. In making my examinations of the property, I explored all the tunnels, shafts and levels or drifts, cut and sunk. There are three tunnels, namely, the "Britannic," the "Leviathan," and the "Mallory." The " Britannica" has been run into the mountain (the main divide of the Rocky Mountains, a distance of about 1050 feet from the Atlantic side, and within about 300 feet of the Pacific slope.) The " Leviathan" a distance of about 750 feet, and the " Mallory" about 400 feet. The " Leviathan" cuts two veins; one of which has some developement-work done The " Britannic, " or principal tunnel, cuts three good silver veins, the " Celtic," the " Baltic," and the " Revenue." It cuts the " Celtic" lode at about 400 feet in the Mountain, the "Baltic" at about 750 feet, and the "Kevenue" near its present terminus. On the "Celtic" vein or lode, a drift has been run a distance of near 200 feet, passing in its course the shaft sunk on that vein from the surface, thus furnishing good ventilation of the tunnel at that point. On thj " Baltic" vein or lode, the principal work of ore developement has been done; at the point where the "Britannic" tunnel cuts or crosses this vein, a shaft has been sunk, on the vein, to the depth of 240 feet. From which shaft, at intervals of each 60 feet in its down- ward course, drifts have been been run, on the vein, dis- tances averaging about 100 feet each, thus exposing, ready for mining, the vein 60 by 100 feet for each 60 feet thus run. This is what is called in mining p.rlance " Blocks, or 01 e in sight." There are four of these "blocks" opened and developed in this 240 feet shaft. In my meas- urement of this vein, in this shaft and in the different drifts run from it, I make the average thickness 16 inches. The thinest point I found being 8 inches, and running from that to 23 inches. But allowing the vein to average only 12 inches, then we find that there is ore in these four blocks, (60 by 100 feet each), 24,000 cubic feet, and allowing 10 cubic feet to the ton there is 2,400 tons of ore ready to be taken out for market from this devlopement alone. The assays I had made from ore that I took from this vein, in person, excluding the largest, " No. 6," shows an average of $118.- 28 per ton. In obtaining the samples, I cut the vein at various points in the shaft and dirifts, and, in doing so, I took the ore in each case from clear across the vein, in or- der to secure an average quality of the vein. These sam- ples I took personal charge of and took them to Denver to be assayed, and before having the assays made, I made inquiry of the oldest and most reputable citizens of that place, Governor Grant among the number, to ascertain who was the reliable assayist there, and was unanimously re- commended to rely upon Prof. E. B. Burlingame. I then committed my samples to him to assay. His certificate thereof was mailed to you at New Orleans, also a copy thereof to Gen. John A. Logan at Chicago. In regard to these assays I will explain that I did not intend the large assay " No. 6 " should be included with the other eight in making the average assay of the lode. After I had pro- cured the samples I did, for that purpose, I then, with the mining engineer, looked through the vein to try and find the richest specimen we could, and selected the " Bismuth" specimen, from which assay " No. 6 " was made. But, excluding that, the average of the remaining eight shows a value far above what is now considered valuable mining ore. The best informed men T found said to me that ore which would run $60 per ton, with reasonably moderate transpor- tation, would pay well. On the subject of the market for the ore of these mines and the transportation thereof, I will say that, with the main tunnel, (the Britannic,) being com- pletely through the mountain to the Pacific slope, a dis- tance of only about 300 feet from its present terminus, brings that end of the tunnel to within about two miles of the town of Decatur, situated immediately below that point, in the valley ot a tributary of Snake River, where the Concentration (works) mill of Geo. Rust & and Co. is now- operating, and, by the construction of a suitable tramway, the ore can be transported from the Pacific end of the tun- nel to that point automatically. Besides this, I have the assurance of the General Superintendent of the Colorado Division of the U. P. K K., that its South Park branch, now within ten miles of Decatur, will be extended to that point early next spring (see his letter). With these facili- ties, all the ore of these mines, (both high and low grades), can be available conveniently and at a large profit. In ad- dition to the ore development, above mentioned, there is now out of the mines, and on the ore dumps at the Atlan- tic ends of these tunnels, about 300 hundred tons of low grade ore, that is to say, ore taken from the mine in mak- ing these developements, from which the richest parts have been culled and carted or packed to market. This low grade assay $51.07 per ton. (See assay No. -5.) Hitherto all ore taken from these mines had to be taken to " Grant," a station on the South Park Railroad, distant 12 miles from the mines. Consequently, this low grade ore was not and could not be made available. But with the " Britannic " tunnel completed it can be made available at a good profit. There are embraced in this property, nine well defined fissure- veins or lodes, all in one group, the titles to which are perfect; beginning with the United States patents, and coining down to the present owners, in one unbroken line. Besides these lodes, there is a large amount of other prop- erty, consisting of timber lands, and milling sites, all with like titles. Also, a large amount of machinery and tools, 10 consisting of one heat concentrator ; steam saw mill, in complete order ; one 35-horse power engine, in the mines, complete ; a complete assay office and apparatus ; black- smith shops snd tools of all kinds, nearly. The tunnels referred to are all well constructed, and in excellent working condition; their sizes are about 6 feet in width, and from 6J to 7J in height, The shafts and drifts are all large and roomy and all in good working condi- tion. There is no water encountered in any of them. In- deed the attitude of these works is so great (about 11,000 feet) that no danger of being interferred with by water need ever be apprehended. From the cost of tunnelling and shafting at the present time, with the modern appliances therefor, the work of this character already done in these mines could not now be done for anything near the price for which this property has been purchased, namely, $200,000. So that, on the plan proposed to operate it the only question that need be considered by those engaging in the enterprise and furnishing the $30,000 in cash to be placed in the treasury of the company, as a fund to defray the necessary expenses and to push the " Brittanic" tunnel through to the Pacific slope, and to construct a tramway to transport the ore to the mill or railway at Decatur, by the time next spring when the railroad reaches that point, is whether the quantity and quality of the ore in the several veins developed and belonging to the property will justify the investment. On that subject I have no hesitancy in saying that, from my personal examination, I am satisfied that the ore al- ready developed in the "Baltic" vein, with the low grade ore above referred to as already out, is vastly more than sufficient to cover the $30,000 and provide for the interest on the $200,000 of the bonds of the company, at 6 per cent, per annum, given in payment for the entire property; and also to make all necessary developments and improvements for the further operation of the mines in the future. If I am correct in this, then those who furnish that operating capital, will be secure in being reimbursed the amount con- tributed to that fund within the first year, and have the in- terest represented by their stock in any future there may be in property, without any cost, beyond the use, for that time of the sum thus advanced to start the enterprise. As I presume you are not acquainted with the history of the 11 property, and its operation in the past, I deem it proper to explain that, as I learned it in Colorado from those who have known it from its first discovery, these mines were originally owned, partly by a company, and partly by individ uals. Upon the development of these several lodes in the beginning, it was found from their "dips," that they were running together at no great distance down ; therefore the company, and the several individual claimants consolidated their interests, and organized what was known as " The Geneva Consolidated Mining and Smelting Company." The business affairs of this company was committed to the man- agement of a man who proved extravagant and careless, and, before the stockholders found it out, involved the company largely in debt; to provide for the payment of which the company borrowed money and secured that loan by a trust deed on the entire property. The company failing to pay the first interest thereon, the trust was executed, the prop- erty sold and purchased by the cestue que trust, who sold to this new company. This is the explanation why such an amount ot valuable development-work on good veins of ore is made obtainable at the price of $200,000, payable in the bonds of this company, due in ten years, bearing interest at 6 per cent, per annum, payable semi-annually, with the privilege of the company paying the whole or any part thereof at any time after one year, if it desires to do so. These bondssecured by a first mortgage on the property only . The basis of my estimates upon which I express)the opin- ion that there can be no risk in embarking in the enterprise proposed is : that allowing the ore in " Blocks " to be 2,400 tons, which assays 113.28 per ton, I reduce that assay to $100 per ton, then allow the large cost of one-half for tak- ing that ore out of the " Blocks," and milling the same, still there would be a net value thereof of $120,000 besides the avails of 300 tons of low grade ore now out. In conclusion, I will add that, so well am I satisfied with the property, after a thorough personal examination of the same, and its future, that I shall take one of the six inter- ests to furnish the $30.000, on the plan proposed by Gen. Simmes, in the formation of the new company, which I suppose he has fully acquainted you with, and I shall not hesitate to advise any of my friends, who may be able to do so, to do likewise. Yery respectfully, &c., (Signed) W. W. WILSHIRE. 12 Copies of Letters referred to in Report. "No. 1." BOULDER, COLORADO, October 13, 1883. W. W. WILSHIRE Esq.: DEAR SIR : Yours of to-day to hand, and in reply will say, 1st. I do regard the property valuable, and one, had I means, would cheerfully invest in. I also feel satisfied that with proper management^ both in regard to the working of the mine and the treatment of the ore, the mine can and will pay largely. Its past management is no secret; in fact, it has been well known as the mine of the forty thieves. Therefore, it is not to be wondered at why so much money has been expended, and so little returns. 2d. The mine can be worked all the year without any extra cost or danger. The snow does not affect the devel- opment ot the property. Some winters the roads are bet- ter for travel from the mines to the railroad, owing to the good sleighing. Yours, most respectfully, GEORGE TEAL, Mining Engineer. . Indorsed as follows: I regard Mr. George Teal as one of our most able and reliable mining engineers in Colorado. Oct. 15th, '83. (Signed) G. G. SYMES. I know Mr. Teal; he is a good mining engineer ; has been in the management of large mines. I have no doubt about his statements being correct. JOHN A. LOGAN. "No. 2." STATE OF COLORADO, GOVERNOR'S OFFICE, DENVER, COLORADO, October 11, 1883. Judge W. W. WILSHIRE, City. DEAR SIR : In reply to your inquiry as to the reputation of Mr. E. E. Burlingame as an assay er, I am happy to say 13 that I regard him as being entirely trustworthy in every respect. Yon can confidently rely upon statements that he may make to you with reference to the value of ore carry- ing the precious metals. Very respectfully, J. B. GKANT. " No. 3." DENVER, COLORADO, October 15, 1883. Mr. W. W. WILSHIRE: DEAR SIR: You ask me the character of my reduction works at Decatur, &c. It is for treating copper and zinc or antimony ores, or such ores as are considered refractory. Can use lead ore that does not run more than 10 per cent, in lead, but do not pay anything for it, as we cannot at present save lead; but in the course of a year we expect to add a smelter to our plant. Our plant is complete, and the first run has been made and is a great success. We can handle at present about ten tons per day, but by the ad- dition of an automatic roaster can increase with our present capacity to 30 tons. We are running on Montezuma ores at present, which they have to bring eight miles up the valley. We expect the railroad in soon, when we will be the natural centre for all ores in that region. Very truly yours, (Signed) GEORGE RUST & Co. " No. 4." UNION PACIFIC RAILROAD, COLORADO DIVISION, GENERAL SUPT. OFFICE, DENVER, COLORADO, Oct. 13, 1883. Judge W. W. WILSHIRE : DEAR SIR : In regard to our conversation as to the com- pletion of our line to Decatur at an early date, I think it will be done early next year. I have advocated it, and ex- pect a number of our directors here in a few days, and think, after my showing them the importance of it, that they will authorize the completion of it at once. (Signed) A. A. EGBERT, Gen. Supt. ON THE Geneva Mining Estate. DENVER, COL., January 1, 1882. DEAR SIR : In accordance with your request, I herewith submit my report on the " Geneva Mining Estate :" LOCATION, ETC. It is situated in Clear Creek and Park counties in Colo- rado, about seventy miles from Denver, and consists of nine- teen lode claims on Ke venue Mountain, at the head of Geneva Creek, the tributary of the Platte Eiver ; of four mill sites on said creek; of 480 acres of timber and agricul- tural land at Grant, a station on the D., S. P. & P. Railroad, located at the mouth of Geneva Creek ; of a smelter, saw mill, offices, etc., at Asterville, about eight miles from Grant, on said creek, and of boarding houses, machinery, and mining buildings at the mines. LODE CLAIMS. These claims are known as the Revenue, Baltic, Celtic, Republic, Oceanic, Adriatic, Gaelic, Graphic, Belgic, Blue, Best, (for all of which Government patents have been issued,) Japanic, Occidental, Murphy, Hugh Kelley, Dudley, Little Railroad, and Kelley and Dudley. These latter are distinct claims, but covered and protected by the surface lines of the patented claims. HISTORY. The discovery of good surface ore (float) on Revenue Mountain, in 1873, induced several prospectors to com- mence work at that point, and a large number of locations were soon made. The result of further work was the pro- 16 duction and shipment of fair quantities of high-grade pay ores; some of it of such exceptional richness as to attract the attention of investors, who, with a view of opening the claims at greater depths, purchased several of them, pro- jected and drove the Leviathan tunnel. The company op- erating this tunnel also purchased quite a number of the adjoining surface locations, and did some valuable prospect- ing work by sinking shafts and running cross-cuts thereon, while driving their main tunnel a distance of 764 feet into the mountain, cutting several veins at a good depth, but not securing any large quantity of pay ore except from the second vein cut. One of the properties which attracted much attention, by reason of its rich surface ores, was the Eevenue mine. This property was purchased for a large consideration from the original discoverers, and soon passed into the hands of English capitalists, who organized the Revenue Mining Company, by whom the work was prose- cuted and large shipments of rich ore made. Other prop- erties were acquired by this company, and, after some time, a conflict of title arising with the Leviathan Tunnel Com- pany, a consolidation of property and interests was effected, and the Geneva Consolidated Mining and Smelting Com- pany was organized, with a capitalization of two million five hundred thousand ($2,500,000) dollars. By this con- solidation of interests the new company was well situated for good and effective work. Possessed of an immense mineral territory, with fissue-veins, mill, and tunnel rights of assured value, this company should have made a great success, and have added largely to the world's store of precious metals at a profit. That these results were not at- tained is to be regretted, but must not be charged against the property. An elaborate system of development was inaugurated and carried on until, by reason of lavish ex- penditure and mismanagement, the credit of the company was exhausted and its property sold to meet the demand of creditors. The mine development thus obtained, at a loss to stockholders, is all of value to future owners. The ex- penditure for the erection of the smelter may be considered as nearly a total loss, as it is of no practical value to the estate. This enterprise was but a repetition of the mistake so often made by mining companies who, when operating at a distance from suitable ore markets, seek to lessen their freight charges by endeavoring to successfully treat their 17 own refractory ores, and this in total disregard of the fact that such ores of one class only can not he smelted econom- ically; that a variety of ores, not usually obtainable from any one mine, must be had to secure a proper flux and such a profit as will warrant the expense of plant and treatment. The only works needed with this property is a concentrating mill, and that only when a large quantity of low grades shall have accumulated. DEVELOPMENTS. The actual mine developments, so far accomplished, may be summarized as follows: Tunnels. feet. Britannic 1,025 Leviathan 764 Mallory 408 Centennial . . .... 193 Eepublic 115 Blue , , . 278 2,773 feet. Drifts. feet. Baltic vein 1,703 Celtic vein 193 Blue 43 Leviathan 677 Centennial 69 Mallory 45 Revenue vein .... 551 3,351 feet. Shafts. feet. Revenue 455 Baltic 275 Celtic 240 Miscellaneous 150 1,120 feet. Stopes have also been driven to the amount of 650 fathoms. I estimate, roughly, the proper cost of the above work at $120,000. The erection of smelter, saw mill, buildings, ma- chinery, etc., will make another item of a least $200,000. I 18 am informed, however, that under the system of manage- ment adopted, the outlay has been over $500,000. From the best information I can obtain, the property has pro- duced between $150,000 and $200,000. In the early history of the mines, much of the work was done by lessees, and large quantities of high grade ore were stolen and never accounted for. It has lately transpired that ore was regularly transported to Georgetown, a distance of fourteen miles, by night, from which the company never realized a dollar, and of which we are unable to get any returns as to quantity and value. The ore must have been high grade, in order to stand such high freight and treating charges as would be demanded under the circumstances. In many instances, also, sampling works, where the company marketed their ores, have changed hands, and the books of the previous owners can not be obtained from which to se- cure accurate returns. I append copies of returns from the Boston and Colorado Smelting Company, showing ship- ments to them which aggregate over $38,000. My estimate of total production is made from what I know of the ore at present, and from what I can indirectly learn from parties familiar with the character of the ore bodies in the past. My attention was called to the property in Jul v last, when I was shown a list of assays made by Professor Burlingame, of this city, (a copy of which is appended and marked Ex- hibit B.) They gave such a fine average that I was induced to examine the property, with a view to its future possibil- ities. At that time I took forty- two samples of ore from the various workings, many of these samples being assayed from curiosity only, but resulting in another large average, as shown in Exhibit C, hereto attached. Since that time I have had the general management of the work and have carefully examined the property, making frequent tests of the ore, and with uniformly large results, so much so that I am surprised at the quantity of the ore and its exceptional value. From these tests and my familiarity with the work- ings I am, therefore, to a certain extent, qualified to esti- mate the probable value of the ore already extracted. In sinking and in driving the levels and stops, nearly 4,000 tons of ore should have been extracted, worth in the rough at least $50 per ton. This would give an aggregate yield of nearly $200,000, as indicated above, though it may not have reached that amount. 19 CHARACTER OF THE ORES. The ores of this district are mainly argentiferous, galena, and bismuth, iron and copper pyrites, gray copper, and zinc blend. Ruby, brittle, and native silver are also found, and nearly all of these ores carry a small percentage of gold. TREATMENT OF THE ORES. At present the most available manner of realizing from these ores is to rough dress them by hand, and ship to smelters all ores running $75 per ton and upward. Ore of this class in quantity will pay handsomely, and the facilities for marketing them are increasing every year. Plans are now being considered for the erection in various portions of the State of leaching works similiar to those used in Cal- ifornia whereby pyrites ores can be handled at a much less cost than by smelting. If this be done, the Geneva ores should be submitted to a different dressing and three classes made, viz: smelting ore galena, gray copper, and bismuth; chlorination ore iron and copper pyrites; concentration ore all ore of too low grade for profitable shipment. FUTURE WORK. In regard to the future working and development of this great property, I suggest-- 1st. The completion of the Britannic tunnel through to the Pacific slope, a distance of 300 feet. 2d. Tne completion of the upraise on the Revenue vein until a junction is made with the main or working shaft. 3d. The extension of the Mallory tunnel to a junction with the blue lode. 4th. The extension of the West tunnel level on the Bal- tic vein to a junction with a drift from the Mallory tunnel on the same vein. 5th. The projection and driving of a lower or main tun- nel at least 600 feet deeper than the Britannic tunnel and from the lowest available point on the Pacific slope. The first four items of the projected work are designed to secure proper ventilation, open new ground, and furnish adequate facilities for working; the ground already parti- ally explored. 20 The latter item to constitute a new and grander system of development, and I give a few ot the many reasons call- ing for immediate work in this direction : 1st. The cutting of veins not encountered in the Britannic tunnel or other workings, but known to exist on both sides of the mountain. 2d. The opening of large bodies of ore in the Baltic, Blue, Kevenue, and other veins now being worked, and in the most favorable manner. 3d. The probabilities that the many veins cut by the Britannic tunnel will be found concentrated into a few larger veins at this greater depth, and thus be worked at less ex- pense. 4th. The increased facilities for handling and marketing ores. On the Pacific slope, where it is proposed to start this tunnel, we are much nearer railroad connections, and the expense to get the ore to the market will be greatly re- duced ; the water supply is more regular for steam purposes, and there is less danger of snow-slides and consequent im- pediment to the work. In order to secure the best results' in this, as in every other enterprise, it is necessary that ample funds should be provided for machinery plants and development-work. This property being already developed to a depth of over 500 feet, its value is a demonstrated fact. The continuity of the ore bodies and their increasing strength and richness is known, and there is not the slightest doubt as to their permanence, and therefore, in the future, all plans should be made with the idea ot prosecuting the work to great depths. Powerful and automatic machinery should be provided, and, while carefully guarding against the mis- takes and reckless expenditures of the past, no money should be spared to make the improvements permanent in their character. So far, in this State, proper attention has not been paid to the use of labor-saving devices in connection with the mining industry. In driving the tunnels and other work on this property I would advise, so far as practicable, the use of power-drills, automatic transportation of the ore, and every device by which time and money can be saved, even if the first cost ot the plant is large, in the long run itwill pay to use automatic appliances wherever possible, and 21 to pay good prices for hand labor when machinery cannot be substituted. With an adequate plant and working capital this property can, at a low estimate, be made to produce handseme divi- dends on a capital of $500,000 invested, and is now in much better shape to produce such dividends than are a majority of the mining properties of the State. From year to year its output can be increased a? new ground is opened and better facilities are provided for the extraction and treatment of its ores. If the lower tunnel is at once driven to a junction with the Baltic and Revenue veins, (which will at that depth be united,) a body of ore will be exposed and available worth many times the price now asked for the property. For every foot of levels driven irom such point of junction at least one hundred tons of ore will be ready for extraction, worth from $75 to $10u per ton. This is not a wild estimate, but a reasonable deduc- tion from past experience in the upper workings. By refer- ence to the maps accompanying this report you will see at a glance how admirably this property is located for a sys- tematic development by cross-cut tunnels. Revenue Mountain is a portion of The Great Divide, or Continental Watershed, and is cut by an unusual number of true fissure veins, running nearly parallel with the divide, and outcropping at an elevation of over 12,000 feet above sea level. At this point the divide is comparatively nar- row or thin. It is, therefore, practicable to speedily cut these veins at nearly a right angle by these cross-cut tun- nels, and thus open up large reserves of ore, while securing perfect ventilation and drainage and the means of extract- ing ore at a minimum cost. The importance of such a location is never underestimated by practical miners, and should not be overlooked by investors. Hoisting ore and water from great depths, as is necessary when confined to shaft work only, is one of the largest items of mining ex- penses, and should only be resorted to when the conforma- tion of the ground will not permit of a system of tnnnels. The maps and plats accompanying this report will give you a good idea in detail of the location of the property and the work accomplished to date. The proposed lower tunnel noted on two of the maps is the one projected and commenced by the old company on the Atlantic slope, and only cuts the veins 400 feet lower or deeper than the 22 Britannic tunnel. My suggestion is in regard to a deep tunnel from the other, (Pacific slope,) the mouth of which would not be more than one mile distant from the track of the Denver, South Park and Pacific Railroad, at Decatur, to which point surveys have been completed, and where smelting works will doubtless be erected during the coming season. This proposed tunnel will cut the veins from 200 to 300 feet deeper than is practicable irom the other slope, and save at least 12 miles of ore transportation. It may also become valuable as a means ot railroad communica- tion through the great range, it being the quickest and most accessible route out. ORE RESERVES. There is now in sight in the Baltic vein, below the 120 feet level, a block of ground 248 feet long by 155 feet in depth, and averaging at least 9 inches in thickness, which will yield 3,803 tons of ore, worth at least $90 per ton, or a total of $342,292, while scattered through the old Baltic stopes, in the workings of the Celtic, Revenue, and Leviathan vein No. 2, good ore is exposed, which would, though not technically in sight, aggregate aa equal amount, or a total of nearly a million dollars worth of ore, exposed in the present workings. Cut this down even 50 per cent, for expenses of extraction and treatment, and a handsome mar^ gin remains. Before making this estimate, I went carefully through all the workings below the 120 feet level, taking samples across the high grade ore streak, (which averaged more than 12 inches every 4 or 5 feet, regardless of the grade of ore,) my assays gave, from three large lots taken in this manner, respectively, 140.6, 102.5, and 30.2 ounces of silver, or an average of 91.2 per ton. In conclusion, I can heartily commend this property as one of the best in the entire region devoted to mining. The estate is large, and very valuable in all respects. The tract of land at and near Grant, including that town site, is finely located well watered and timbered, and yearly in^ creasing in value. The mill and tunnel sites are also de- sirably located. The lode claims are true fissures, and therefore destined to hold their value for many years, Clear Creek county, in which they are located, ranks as one 23 of the largest and surest producers in the State, having yielded since 1859 over $20,000,000 of the precious metals, and each year increasing her output. However valuable for the time being, deposits of ore may be, it is to fissure- vein mining we must look for that steady and never failing supply of gold and silver which gives wealth to the nation and the judicious investor. I cannot insist too strongly that if your friends interest themselves in this property they should bring to the enterprise the same business capacity that characterizes all other successful business ventures. The mining industry has carried, in years past, a load of ignorance and incapacity that would have swamped any other industry, and had it not been for the exceptionally large profits arising from the few enterprises that were fairly managed, even it could not have survived. There are to-day thousands of dollars lying in the slag dump of the Geneva smelter that should have gone as dividends to its owners ; and all over this State, like monuments of folly, ex- ist to remind you and us of the sure effects of ignorance and mismanagement. With attention to three important items, men of capital can secure magnificent returns from mining ; without this attention the results of investment must nearly always prove disastrous: First, secure property that pos- sesses intrinsic value and gives assurance of permanency ; second, provide the enterprise with an adequate working capital; third, employ practical mining skill in the man- agement of your property. In the Geneva Mining Estate you will find the first requi- site, and my experience and observation both teach that if you will meet the other requisites you will be greatly benefitted and immensely repaid. In this particular case and with this property it rests entirely with the manage- ment to make the enterprise a glorious success. Eespectfully yours, (Signed) A. W. KELLOGG. MEMORANDUM. Of Ore bought of the Revenue Mining Company and Geneva Mining and Smelting Company by the Boston and Colorado Smelting Com- pany. Date. Weight. i ASSAY, PER TON. d o JL g, | *c CM Amount paid. d 1 1 cc h O> jj U, ** O o O C* 1879. April 11.. May 22... < June 13.. . July 3..'..' August 23 Nov. 22. . . 1880. Jan. 21... Feb. 21... March 29.. May 6 .... Nov. 10. .. Dec. 2.... Dec. 27... 1881. Jan. 17... " 31... Feb. 5.... " 7.".' " 9.... 1 4,569 1,977 2,092 1,578 3,184 1,161 6,161 19,164 6,309 2,176 1,714 400 5,684 391 782 7,376 8,092 15,249 1,931 20,453 20,111 7,274 24,985 17,607 12,325 2,039 15,145 913 19,150 13,400 4,628 19,989 8,373 495 4,904 Ore 214 362 45 280 210 210 119 66 162 41 177 77 112 16 151 173 85 178 263 308 307 287 225 467 527 338 470 531 191 189 221 170 616 771 73 .8 .7 2.5 13.0 9.5 9.5 6.0 2.0 5.5 2.5 7.5 4.0 6.0 6.5 3.0 5.0 6.0 3.5 4.5 19.5 20.5 17.5 9.5 24.0 27.2 5.8 24.0 14.7 10.4 9.0 10.9 8.0 32.4 12.3 4.0 $192 90 343 80 30 70 267 80 195 30 201 70 103 30 48 40 149 00 25 00 167 60 63 10 101 30 8 60 135 80 157 50 74 30 157 20 254 20 338 40 338 60 308 50 238 67 519 90 606 60 389 46 530 22 584 33 20? 83 196 97 236 75 175 44 704 60 890 52 71 55 $440 57 339 67 32 11 211 29 310 91 116 98 318 16 463 76 469 94 27 20 143 63 12 62 287 89 1 67 53 09 580 86 300 61 1,198 49 245 43 3,460 47 3,404 79 1,122 01 2,981 58 4,576 93 3,738 17 397 05 4,015 09 266 74 1,989 97 1,319 70 547 83 1,753 43 2,949 80 220 40 175 44 .4 .2 .... .35 .2 .... Matte. . Ore Matte. . Ore .45 .67 .66 .30 .75 1.70 2.90 3.60 2.43 3 15 1.10 .75 1.00 .70 3.05 7.05 .65 Furnace, bottom Matte . . Ist-class ore 2d-class ore. . . . $38,474 28 25 The above is a correct statement of ore and matte purchased by us from the Geneva Mining and Smelting Company and the Revenue Mining Company. (Signed:) H. R. WALCOTT, Acting Manager. ARGO, COLORADO, October 17, 1881. NOTE. In making our estimates at least 25 per cent, should be ad- ded to the above amount for smelting charges deducted; this would make the total $48,092.85. We find, by corresponding with men who held leases on the property, that there has been sold at Georgetown and other points about $50,000. (Signed) J. D. BEST. 26 EXHIBIT B. Report of Assays by Prof. E. E. Burling ame. Description. Gold. Silver. Value per ton. West side 120-foot winze, west oz. .1 oz. 70.9 $79 99 Near bottom of shaft, east side Tr. 337.8 371 58 East side 120-foot winze, west .73 674.4 756 44 180-foot drift, roof near brest Tr. 34 37 40 Between 180 and bottom of shaft .1 14.7 18 17 180-foot drift west hanging wall .7 83.03 105 33 BottoF 120-foot winze west 1.8 836.2 955 82 180 foot drift west in roof ... 1.46 49.2 63 32 New find bottom of shaft 266.2 292 82 240-foot drift "west ... 355.06 391 22 180-foot drift, west, foot wall .1 40.1 46 11 Bottom shaft, west end Tr. 9.33 10 26 Pocket, near bottom shaft, west end . . . Between 180 and bottom shaft, west end. East side shaft below 100 feet drift. . Tr. .46 Tr. 321.13 28.5 78.66 353 24 40 54 86 52 180-foot drift, east .16 251.7 280 09 Bottom shaft, east end Tr. 202.26 222 48 180 foot drift east ... . 1 86 215 8 274 58 Brest of Mallory Tunnel drift Tr 33 3 36 63 Entrance Tunnel, Leviathan U slope 488 06 536 86 Mallory Tunnel drift 1.0 183 03 221 44 Celtic, west drift .26 14.87 21 55 60-foot drift at shaft 305.06 335 56 End of slope, tunnel level Tr. 85.33 93 86 Dump above Leviathan shaft 33 21 47 30 21 Winze below 60-foot level .1 83 96 94 35 60-foot slope near west end' *. Tr. 43.66 48 02 Leviathan shaft .8 352 2 403 42 60-foot drift .2 41 96 *0 15 Tunnel level, center of slope East side shaft, bet. 120 and 180 feet. Celtic drift, east .33 .1 1 75.0 127.23 88 13 89 10 141 95 98 94 Select specimen 6 310 4 353 44 Slag from mill 1 2 212 13 257 34 Slag from mill fifi 1O9 05 IOK on Slag from mill Tr 10 33 11 36 Ore at assay office 46 108 53 127 38 Mftllory Tunnel, east drift. . . 16 14 fi4 19 30 Upuer cut dump Tr 4Q 96 54 18 60-fooi drift, large pocket 5 284 63 323 09 Iron ore 97 fi QO oa 60 -foot slope, near winze Tr 385 66 424 22 60-foot slope, east end 26 0* KA 110 2Q 60-foot slope, east of winze 2 668 46 739 30 60-foot slope, west end 16 mi7 127 68 . Average, forty-five assays $206 66 27 EXHIBIT C. Report of Assays by Ihomas A. Houyhton. Description. Gold. Silver Value per ton Baltic rich specimen oz. 20.1 oz. 1 873 9 2 502 16 slope 60-foot level . 27 55 30 85 slope from tunnel level Tr 219 1 245 59 sott streak, under pay, 60-it.level. 4.45 10.7 392 5 11 98 531 58 select specimen 2.77 259.73 337 14 small pocket, neir west end shaft slope above tunnel level Tr. 1 263.5 2 3 295 12 4 63 slope 60-tbot level west 325 25 364 27 bottom shaft . 92 65 103 76 bottom shaft 72.4 81 08 120-foot level, west.. . 145.9 163 40 shaft, 8-inch streak 1. 200.1 226 17 60-foot level, east. . . . Tr. 407.6 456 51 winze, between 120 and 180 bottom of shaft 1.7 344.4 2.5 420 85 2 80 slope, above tunnel level .2 19.9 25 40 180-foot level west Tr. 195.9 219 40 dump Tr. 25 6 28 67 180 toot level west .6 22.9 38 00 level, east. .35 181.65 210 67 shaft, west end 35.1 322.15 1,086 31 180-foot level east .15 25 1 31 21 120-foot level, east. .4 48.5 62 58 bottom shaft : . . . . Tr. 8.1 9 07 73 6 82 43 Leviathan dump... 15 195 1 222 11 Leviathan dump . . . 53 4 59 80 Revenue dump 34 38 08 .2 24.1 31 11 Leviathan drift No. 4 .1 2.4 4 74 Mallory drift No 2 20 9 23 40 Mallory, drift No. 1 . . 1 4 55 7 15 Republic dump Tr 63 5 71 12 Galena lode 28.6 32 03 Revenue, bottom shaft 43.2 48 38 Barry's dump . 113 7 137 34 Leviathan shaft, drift No. 2 641 1 718 03 " " l Tr. 1 6 1 79 " 3, side " 3, brest Tr. .2 1 2.2 7.5 46 2 2 46 12 52 53 80 Average 42 assays $214 88 DENVER, COL., May 15, 1883. GEN. B. B. SIMMES, Denver, Col.: MY DEAR SIK : I learn with pleasure that you have se- cured the Geneva property, and in response to your inquiries can say briefly, that you have obtained one of the best prop- erties in the State. I prepared a report on this property in January, 1882, for a Mr. Godfrey, of New York city, which gives full details in regard to the extent of the prop- erty and its development. You doubtless have a copy of this report, and I am at this time confident that no state- ments were therein made which will not stand the closest examination and be confirmed by any reliable expert. Since writing that report I have visited many of the lead- ing mines of the State and find none that excel the Geneva combination, both in present and prospective value, and I therefore congratulate you on your purchase. It is now understood that the Chicago, Burlington, & Quincy E. E. will extend its line across the head of Geneva Gulch this season, its track passing within 200 yards of the mine, and thus putting the property in direct connection with Denver and other smelting centres. The Denver, South Park. & Pacific E. E. is also pushing its line up the Snake river to Decatur, and will be running regular trains from that point this year. The smelting works at Decatur, of which mention is made in my report, are under construction and will buy ore this season. All over the State the mining prospects are flattering and the output of ore for the first quarter of this year gives as- surance that the yield of precious metals for 1883 will be many millions in excess oi any previous year. I was shown yesterday a large sample of ore taken from the Terrible mine at Georgetown, (same county and Mineral Belt as that in which Geneva is situate,) which runs from 900 to 1,200 ounces in silver. This ore was from the depth of 1,300 feet, the lower workings of the mine, and at this point the vein is stronger and richer than at any other depth in the mine. This should give you renewed confi- dence in deep mining, and in tne permanence and value of the Geneva property. 29 You enter upon the mining business at a very favorable time, recent improvements in mining and mill machinery make it possible to mine and mill ores at a profit, which a few years ago could not be handled, while the extension of our various railroad systems to remote camps is bringing a greater variety and quantity of ore to market and rendering it possible to establish large smelting works where our ores can be treated at a minimum cost. There are many thousand dollars now lying idle in the ore and slag dumps of the Geneva property that can be made available this season, it not having been practicable hitherto to move this slag and ore on account of heavy transportation and smelting charges. Under wise manage- ment the Geneva property should pay handsome monthly dividends for years to come on a capitalization of $500,000, and if I owned the property with capital enough to provide a good plant of automatic machinery, I would not sell it at that figure. With best wishes for your success, and the assurance that I shall be glad, at any time, to furnish you with any infor- mation I may possess in regard to the property or the best mode of working it, I remain, Yours, very truly, A. W. KELLOGG, Mining Sup't. COPY OF REPORT OF PROF. BOARD, OP THE SCHOOL OF MINES, GOLDEN, COL., UPON THE REVENUE GROUP. (NOW KNOWN AS THE GENEVA GROUP.) This property has been worked from the surface for some years past ; more lately, however, these surface workings have been partially abandoned, owing to the expense con- sequent upon hoisting from the lower levels after they had been carried down to the depth of 200 feet. The mine hav- ing been proved beyond question a rich and paying one, the decision was come to to open it by a tunnel which would (besides intersecting many other prominent veins be- longing to the company) cut the Revenue Mine at the depth of 400 leet. This tunnel, known as the Britannic Tunnel, has been driven in during the last three years, and has been carried a distance of 1,025 feet, cutting on its way no less then fourteen veins, three of which only have been worked on the " Celtic" " Baltic" and '' Revenue" It has been considered of primary importance to push on the tunnel, the other eleven veins were only sufficiently worked on to determine their general bearing (vide Plan, No. 1.) Britannic Tunnel is driven from the head of Geneva Gulch, on the Atlantic Watershed, about 8 north of west, or al- most at right angles to the general lay of the dividing ridge, which is almost due north and south, and gaining the crest of which, the Pacific Watershed is reached. The tunnel, if pushed about 300 feet further, would, in fact, be- come a connecting link between the waters of the Platte on the east, and of the Snake on the western side of the range. The geological formation exposed by the Britannic Tun- nel is similar to that of the Georgetown district on the 31 north, and the St. John's Mines on the south; the whole of the great mineral belt which intersects Colorado being, in fact, the same; that is, the belt in which true fissure veins occur. Gneiss, interstratified by veins of porphyry, granite, and other metamorphic rocks, is the country rock of the district, which in this case seems to be perfectly riddled with mineral-bearing veins, which can readily be traced on the surface from a point about half a mile northeast of the Reve- nue workings to 1 J miles southwest, where the Montezuma district is reached, through which the veins pass to the St. John's district, also to the head of Deer Creek, the Snake and Hall Valley. THE CELTIC MIXE (No. 7 on the map) was the first cut by the tunnel on which any important work was done, it being deemed necessary to take advantage of its surface shait and make connection with the tunnel for ventilation, as well as to develop; the vein being a large and promising one, and cut at 454 feet in, this point being 240 feet from the surface. This shaft has developed a vein from six inches to (in places) 2 J feet wide, the ore consisting of yellow and grey copper, galena, zinc-blende and iron pyrites. It will average about 50 ounces of silver per ton, and when worked can give a large yield. THE BALTIC MINE (No. 10 on the map) has been actively working during the past season. A roomy engine-house has been blasted out, and a shaft sunk 120 feet, and a rise put up 123 feet. From the tunnel levels have been driven east 189 feet, and west 160 feet; at a point 60 feet below the tunnell levels a drift has been driven east 126 feet, and west 71 feet. The best body of ore is down below these levels, being 12 inches thick and very rich ; but a good aver- age body of six inches is visible through almost the entire workings; and when the 120-foot levels are driven in, so as to open the best stopes, a production oi about 10 tons is ex- pected, which will average 100 to 120 ounces. The last lot of first class, which was sold to Professor Hill (seven tons), gave an average of 265 ounces. To-day the Baltic Mine could not produce one-half of the estimated yield; but it must be borne in mind that whilst the rich ore in the shaft has been exposed, the drifts are not yet sufficiently advanced to enable stopes to be started, or the mine in any way to do itself justice. It is intended to sink the main shaft a fur- 32 ther distance of 340 feet, and connect it with a second tun- nel from the Geneva basin, which would work, drain and ventilate the whole property, and give the mine a "back" of about 800 feet, and the Revenue one of 900. The ore from the mine is particularly clean, and free from spar and gangue, and consists of iron pyrites, generally en- closing a broad streak of grey copper quartz, sprinkled lib- erally with brittle silver and occasional small streaks of galena or blende. On the surface a shaft has been sunk for 35 feet, and bismuth, silver, galena aud grey copper met with in separate streaks. The crevice is large and well de- fined, and unmistakably a true fissure. THE REVENUE MINE (No. 12 on the Plan) is the next on which important work has been done, and is the mother vein of the district. When first struck, it was a narrow and unimportant looking streak, but after a raise nad been put up some 30 feet, a large body of ore was struck. At the point of intersection with the tunnel the vein was 888 feet in, and 400 feet from the surface. The "rise" has now been put up 70 feet and is intended to connect with the 180-foot shaft of the upper workings. This will probably be done in the early spring of 1884, which will at once give a ready and cheap access to the large bodies of ore left standing in the " Upper Mine," and largely increase the daily yield. A drift is now being driven west from the Revenue rise, and a very good body of ore struck, a sample from which, lately assayed, is said to have given 1,260 ounces per ton. The average of the mine has been about 75 ounces, and yields about a ton to the fathom. The ore is chiefly grey copper and galena, mixed with heavy spar and some little blende, with iron and copper pyrites. The vein matter ex- tends to 12 to 14 feet, and the lode is almost perpendicular, all the others pitching in a greater or less angle in towards it. It is my opinion that at greater depths those lodes will come together and form one large body, in which case the ex- penses of running would be decreased and the yield increased. The vein which runs along the ridge of the mountain has been opened from the surface by three shafts, 180, 120, 70 feet deep, which have been connected with levels driven on the lode, and exposing a strong and valuable vein for a dis- tance of about 300 feet. Part of this ground is now leased out, the men making good pay, though they have to pack 33 the ore to Georgetown (23 miles by trail), pay all expenses and a royalty to the company of 25 per cent. Large board- ing houses and ore-sheds have been constructed at the mouth of the tunnel, and others, together with the company's of- fices on the plateau below, from which the lower tunnel is to start. The furnace- house, saw-mills, general offices and stores have recently been constructed in the valley below, where ample supplies of timber and iron ore beds have been secured. The other veins belonging to the company on the Atlantic slope, which have already been|(or will be) cut by the tunnel, are the "Kepublic," "Gaelic," "Adriatic," "Belgic," "Oce- anic," "Dramatic," "Comic," and part of the "Perry Hunt," and u Congress." THE LEVIATHAN TUNNEL, belonging to Detroit and Bal- timore parties, is situated about 900 feet southwest of the Brittanic Tunnel, and has been driven in 800 feet, inter- secting several promising lodes. The latest cut is one show- ing 15 inches of ore, with 100 ounces per ton, chiefly iron pyrites. A large quantity of ore may be mined here next season. About a mile west of the Brittanic Tunnel, and in the horse-shoe adjacent to Montezuma district, are a num ber of important veins, the most prominent of which is the '' Colorado," owned chiefly in London. A large sum has been expended in the development of this property. A shaft has been sunk about 70 feet, and intersected by a cross-cut tunnel about 120 feet, and drifts run out northeast and southwest on the vein for some 200 feet a short upper drift, some 40 feet. Here a large body of ore has been ex- posed, chiefly galena, carrying from 55 to 60 ounces per ton ; but, owing to the difficulty and expense hitherto ex- perienced in packing the ore to market, the mine has been remaining idle for the past year. A tunnel has been started below, and driven in about 150 feet, which will, when completed, give a back of at least 350 feet, and make the ore to be mined much more cheaply. Like the whole of the Kevenue property, this mine is secured by a United States patent. Other more prominent mines in the immediate vicinity may be enu- merated as follows : The Treasure Vault, Silver Bell, Elgin. St. Charles, Chicago, Silver Glen, Naval, Gilman (extension of the Colorado), Eagle Bird, Bob Tail, Queen, Modoc, 34 Santa Fe, Anglo-Saxon, Sherman, Mary Anne, A. V. Sill, Comstock, Victoria, Minnie, May Flower, America, York Town, Lexington, Centennial, Casino, Elendale, Tainburg, Corkingdale, Joe Lee, Perry Hunt, Congress, Star, Green, Blue, etc., etc. Of these, besides the Colorado, the Star, Silver Bell, Gilman, Green, Treasure Yault, and one or two others, have had a considerable amount of work done, and show, as do indeed most of the others, good bodies of ore ; but the high rates of freight hitherto prevalent have, in most cases, checked both development and production, so that the whole district may be said to be in its infancy. The completion of the wagon road, built by the Revenue Company to Grant, will stimulate work not a little ; but with the facilities afforded by railroad communication, it is believed that the whole district must rapidly assume the position nature has given it every chance of getting namely, one of the surest and largest producing districts of Colorado. In conclusion, I would again briefly refer to the Revenue Company's property. It is, beyond all ques- tion, a very valuable one, the true fissure character and richness of the veins being beyond all question. The rich ore exposed in the Baltic shaft will be available at a mini- mum cost when the drifts below (now in progress) are push- ed further in, and the stopes opened. This work is now rapidly progressing, and when these stopes are opened, and when, in the Revenue Mine, the connection between the 70-foot rise and the 180-foot shaft has been made, the gene- ral production which to-day, by careful calculation, is es- timated to be from 5 to 7 tons per diem would be con- siderably more than doubled ; whilst, when the lower tun- nel intersects the veins on the 900-foot level, and the Ger- manic Tunnel, cutting the surface workings near the north- east boundary, and connected with them by the extension of the present levels, enables the whole of the upper work- ings to be brought into play, discharging their ore by the main shaft to the 900-foot level, the product of these mines daily may be confidently estimated as second to but very few indeed in the State. From my personal examinations of the Geneva and St. John's Mines, together with the re- ports I have heard of the adjacent districts of Montezuraa, Deer Creek, and the head waters of the Snake River, and with the knowledge gained by the purchase and smelting of many tons of ore from these and surrounding districts, I 35 believe a daily production of 100 tons is the very least that can be estimated ; and that these veins will be permanent producers, in contradistinction to those of deposit forma- tions, is also beyond doubt. The broad rule, too, of rich- ness increasing with depth (which is not always a safe one to base estimates on) seems, in the case of the Revenue Group, to be substantially borne out ; ior by far the rich- est ore yet struck is in the deepest workings, the body lately struck 60 feet below the tunnel level (extending to 120 feet to the bottom of the shaft) assaying, the superintendent in- forms me, as high as from 2,000 to 3,000 ounces per ton. Explanatory of the above report, I herewith forward the longitudinal Plan of Britannic Tunnel, showing the va- rious veins hitherto struck ; Section of the Revenue Moun- tain, showing the course of said lodes, also the points of intersection by Revenue Tunnel, and the line of proposed lower tunnel ; Section of Baltic Mine, showing ground al- ready opened and that stoped out up to date. JANUARY, 1882.