Show THE LINCOLN GOLD MINE OF PEARL IDAHO an instance of success achieved after eral years of exhaustive development ex sive equipment overcoming obstacle efter after fter obstacle and at last reaching a period f steady unsteady production and a paying basis is illustrated lust rated in the career of the lincoln gold ping mining co limited of salt lake city the property of the lincoln company is prated abed near pearl idaho in westview West view g district twenty two miles northwest of oise and comprises three full claims join ig 9 end to end and covering feet of during the past three years and now the lincoln is regarded ded as the most extensively developed the most modernly equipped and the most productive of any gold mine in westview West view district to begin with a double compartment incline shaft was sunk on the vein on ore ore to a detthof depth of feet but operation through this avenue was subsequently abandoned because of swelling ground when feet northeasterly from the old shaft a triple compartment shaft was started which has ry 4 tw VIM the lincoln hoisting works the lincoln combination mill e ore bodies which have made the linto mine so justly famous 0 when the lincoln company began the era er atlon tion development and equipment of 8 group in april 1902 it was little more an 11 a prospect although in its shallow or I 1 kings enough ore ire was in sight to pay le purchase hEise price of the property ore ship bents from the mine during the first year at t it was amounts worked by the company to several thousand dollars beginning at almost the bet beginning hining the mcany dany has accomplished almost a miracle now reached a depth of feet and it is estimated that it will cut the main vein on its dip at a vertical depth of feet in the new shaft at the foot level a station was cut and a crosscut cross cut was run a distance of feet to the vein and it is through this crosscut cross cut that the ore from the mine is taken at the present time mine de development an immense amount of work has been accomplished in the lincoln mine all of which is available for successful operation and estimated as being in excess of feet feet of which is in ore of a good milling character while a portion of the ore blocked out and in sight is a good shipping product on the foot level the company has run drifts on the ore east and west of the shaft for an aggregate distance of feet on the the drifts on ore have been run for over 1200 feet following a continuous body of pay milling ore while on the level the drift east and west of the shaft has followed the afie same ore bearing channel for a distance of 1600 feet from the foot level an upraise has been made to the surface all the way in a fine body of milling and shipping ore west of the shaft on the an upraise has also been made to the surface all in payable mineral about feet east from the old shaft and just above the mill a foot tunnel has been driven on the vein the entire tunnel being in good ore which can be delivered to the bins at the top of ahe he reduction plant by gravity in r n the he t various mine workings at the present time according to rough estimates made there are all of tons of ore exposed ready for extraction and treatment formation the general formation at the lincoln is a contact between granite and porphyry the former being the and the latter the hanging wall of the deposit there ther e jre two parallel veins and probably more on the holdings of the lincoln company fae strike of these veins are from east tf tfx west ivest the dip being fifty eight degrees to P north the main vein near the surface 0 o on the foot level is about four feet in eidth carrying pay ore from wall to v all from the surface down the ore body ss s gradually increased in size and at 1 9 ir apra ath of feet it has widened to six feet character of ore the ore of the lincoln mine is a itic quartz being a base iron sulphide carrying gold silver and lead and yet in its of the hopes of the management at ta the hoisting plant a new double drum hoist has just been installed the plant Is operated by compressed air generated by electricity derived from the payette river plant at horseshoe bend the compressor of cubic feet capacity is of the most modern type and in addition to ta power supplied for other purposes is operating three machine drills in the mine the electric motor is a general electric horsepower of the 3 phase type at the level in the mine is installed a gal lon knowles pump which is also operated by air it is only recently that the electrical and compressed air equipment has supplanted theold the old steam plant the use of which was so costly in the past the steam plant however is held in reserve and can be placed in commission at any time should there be any accident or break in the electric line or plant at the hoist there is a vator to the ton ore bin at the top of the he L mill from the bin it is automate auto automatically matl C ally fed into the screen the undersize iza passing through and going directly to the trent mill the oversize goes to the cornish rolls by gravity where it is crush ed to one half or three quarter inch and thence to the trent mill where together with the undersize it is crushed to 20 mesh from the trent mill the pulp goes over the plates where 30 per cent of its gold values is recovered the tailings from the plates pass to sump tanks and are then raised by bucket elevators to the large tank at the top of the co concentrating room by gravity from the large tank the tailings are then conveyed to the concentrating tables where two grades of concentrates are made the high grade streak being cut out and sacked for transportation to the market the low grade which is the bulk of the resulting product being re ground to mesh and is then subjected 5 0 4 4 LOT ALI interior view of lincoln mill lincoln concentrates for reduction 30 per cent of the gold values are saved on the plates the ore in its metallic contents for the past year according to mill returns has averaged in gold and silver not counting the lead contents amounting to 1 per cent to the ton which with the other values present would make a total of 1104 gross the shipping ore ranges from 45 to in value the proportionate values are 80 per cent gold to 20 per cent silver mine and mill equipment those who saw the lincoln and its surrounding three or four years ago would now how scarcely recognize the place with its fine surface buildings and improvements A commodious boarding house has been erected also a fine office structure and a fine and up to date assay office and laboratory gives a finishing appearance to the scene as viewed by those approaching this thrifty little camp the hoisting plant is a fine and imposing edifice while the splendid milling plant is suggestive of the final realization fine timber framing plant and blacksmith shop from the shaft house to the crusher room in the mill there is an endless belt ore conveyer of almost unlimited capacity which discharges the ore from the mine into a ton gyratory austin crusher the floor space of the lincoln mill occupies approximately square feet and the th equipment is as follows A ton austin gyratory crusher a bucket elevator one set of cornish rolls a 6 foot trent mill 24 feet of amalgamating plates 11 improved wilfley concentrating tables 12 cyaniding cyan iding tanks 24 zinc boxes a champion automatic feeder one 3 by 6 screen 2 6 foot re grinding mills cleanup and stock solution tanks filter press and 3 motors of 50 and 15 horsepower mill practice Pr atice the ore coming from the mine is delivered to the crusher room as previously stated passing through the crusher it is reduced to one or one and one half inch in size it is then carried by the bucket ele to treatment by the cyaniding cyan iding process fo from twenty four to thirty six hours the thi solution is drawn off and raised by beani mean of centrifugal pump to the cleanup clean up room where it is run through the zinc boxes the recovery by this combined process is i 70 per cent of the assay value of the ore the company at the present time is treat trea ing thirty five tons of ore every ten hours or in one shift but will soon be running tw two shifts which will be the case as af soon a as the electrical pumping plant at the mar guerine shaft a mile and a quarter fron from the mine and within feet from 4 the th e corn com banys mile and a half pipe ling lias taking water from willow creek is dinst ailed and in commission the company is constantly making im prove ments at the mine and mv mill 1 As stated sta the property has a fine bunk and board ing house assay office etc to which list ills might be added a food good general store al all the company buildings shaft house and an mill are lighted by electricity and th the i mine workings are illuminated by the same method at the present time a force of forty men is on the payroll and this number will he be greatly increased within the near future the development and equipment of thi the e lincoln has received the closest care and attention from the kennedy brothers david kennedy of salt lake and gilbert F kennedy of knuston new york the t former being general manager and treasurer of the company with the kennedy brothers it has ben been a matter of pride to make good and to bring to the front a 0 producing and paying property whery oth ers might have failed owing to the serious and almost insurmountable difficulties difficult ies which have confronted operations almost from the begin beginning 1 6 indeed but for the 1 bull dog tenacity of these gentlemen and their unshakable faith in the value and merit of the companas comp anys property it is more than likely that this enterprise would have been abandoned long ago in the carrying out of this splendid work in solving the problems that have so persistently confronted every step of progress made the kennedy brothers have been most ably assisted and counseled by george Z edwards the well known mining engineer and millman and who is now general superintend det for the company the company is now on a regular producing and paying basis and its future promises all that has been hoped for all that has been so long expected it hd has no designs on the investing public although it still has over share of stock in its treasury fy iri in fact the bulk of its capitalization is closely held by a few individuals who expect in hi the near future futi ire to realize handsomely upon their investments |