Bisbee daily review., 1903-08-19
BLACK DIAMOND
 FORCING AHEAD
SUPERINTENDENT LAKE TELLS
 OF MINES PROGRESS
elre Line from Pearee Win Supply
 the Water for the Reduction Works "A Big Output Already on Hand.


 s. c. Lake. superintendent of the Black Diamond Copper company, was a visitor in Bisbee Monday and Tuesday. In conversation with rep resentative of the Review. MT. Lake gave out some interesting informa ton concerning the work being done at the copper camp Of which he is the head.
 Black Diamond looks better and better every day" said MT Lake, and we are now pretty busy with our new pipe line. which will convey water to us from Pearce. near the Common wealth mine. This new line will be about six and half or seven miles in length when completed, and will i'll long felt want in our water sup ply. 1- --Aals< Last winter, when there was plenty of water in the hills we were given to understand that the supply was permanent and for that reason did not worry ourselves about water. We found a short time ago that we had been laboring under a false impres- zion, for after a run of eighteen days we were forced to abandon our plant for lack of water. But this incor- venience will be overcome soon. for we now have thirty-one men at work on our pipe line and expect to com plete it a- an early date"
 Mir. Lake. in speaking of the new pipe line of the Black Diamond com pany, stated that gravity will play an important part in conducting the wa. ter to his camp on account of the nat ural fall from Pearce. After a fall of l3s feet in 5000. the water is pump ct to Black Diamond. height of TOO feet from the station.
 Asked about the production of the Black Diamond. NIT. Lake said: "On account Of the way in which we have been obliged to work recently 1t would be a hard matter 10 say exact ly what the production of the mine is, but I do know that it is a permanent proposition. We now have about 10000 or 120G0 tons of ore broken and there are 8 miners at work ge-- ting out more of the metal every day.
 "we are down TOO feet from the surface and in the lower tunnel have sunk another shaft which is now down about 1S0 feet.
 There is one thing about the ere at the Black Diamond that makes it an economical mine 10 work and thal is the great amount of silica in the ore which renders -S self fuxing. The ore runs from s to % per cent copper and has a general average of about per cent of the pure metal. The silica runs about 3S per cent, while there is some silver and little goia
 'we have a furnace of 200 tons daily capacity which, however, is not now working and will not be in oper ation until we can get water piped to the mine and plant. Our plant is ar excellent one for the work we have in hand and the fact that the slag shows but 3-10 of l per cent copper is prool enough of it's saving.
 "An experimental run of 250 ton; of our ore we shipped. We do no use a converter in our process. W' roast the matter thereby oxiiizing i ana turn out Dldch cCpptI. EdOA tC' of black copper bullion should g, about 95 per cent pure copper witt values in silver from 250 to SO' ounces"
 Mir. Lake is most hopeful of th' future of Black Diamond and think that he will be able to show it on of the best paying camps in the ter ritory soon as his water supply be comes adequate.
 Among the other equipment of tn Black Diamond is an aerial tramway one and one-half miles in length. wiI c fall of nearly 800 feet The capac fly of the tramway is about 15 10 z tons per hour and can be increases considerably in speed if found necef sary.
 MT. Lake will return to the propert this week after attending to som matters of importance here.