Arizona silver belt., 1891-12-12
Tmr GREATEST SILVER MINE IN TtE
 WORLD.
tsiIee, City Rnternri.s.,

tsileeT City Enterprise.
 How many persons, even among those most interested in mining, are aware of the fact that within three miles of Sil- ver City is mine which has in sight, and fully developed tho largest amount of participating silver ore in the world. Nevertheless such is the fact The Bremen group of mines have over 3 miles of shafts, drifts and cross.cuts all in good ore, She lowest estimate of the number of tons in sight is upwards of four millions, and these estimates have been based upon accurate measurements made by competent civil and mining engineers.
 The silver is hold as chloride and as native silver, being absolutely free from base or refractory minerals and easily amalgamated the only obstacle to tho successful working of the ore heretofore has been tho slimeing which must necessarily take place where this character of rock is crushed under stamps, and this slime runs over from the settling tanks and carries away with it in suspension large percentage of the chloride held in the rock before it reaches the pans and comes in contact with the mercury by which it would be amalgamated This obstacle is greater and more detrimental with the ores from the Bremen mine than any other mine in the world. by reason of the peculiar rock of the vein in which tho silver is held. The gangue or matrix of the vein or deposit is an argillaceous slate, which is nowhere else found to contain the precious metals,
 As it occurs nowhere olso in tho world, there was no precedent to be followed in the working of the ore and the only thing to be done was to dem onstrste by experiment the most feasi- ble method of extracting the silver and avoiding the shines which carried away so much value. This at last seems to have been accomplished by Professor Kearsing an oldtime assayer and metal lurgist of the Pacific coast, who has been experimenting on tho ore for the past month, having como hare for that especial purpose. The rock being of an absorbent nature, he crushes the ore through rolls to tineness of not over nine meshes to the square inch, or even in particles of one-half to an inch in size, which by reason of the absorbent quality of the rock Is easily permeated by fluid which he uses in hxiviation of the ore. In experimenting hereto. fore the metallurgists have produced a teaching fluid which dissolved the chlo- ride leaving tho native silver in the ore and thus occasioniug great loss By Professor Kearsings new method, the chloride and native silver are both ex- tractsd and the ore can be worked up to at least 80 per cent of itsassay value, at a maximum cost of S1.5O per ton. The average assay value of this vast body of orc now developed is S13 per ton, making an aggregate of fifty-two millions in sight which on saving of at least S5 per cent will produce forty four millions two hundred thousand dollars
 !
 The maximum cost of mining cannot possibly exceed S1.25 per ton, and oi reduction sl 50 per ton, leaving a net profit Calculating on 85 per cent of Sl1.O5) of S8.3O DOT ton.
 | Professor Kearsing has received in structions by telegraph from M W. | Bremen, to proceed with the erection of an experimental plant for the reduc. | ton of the ores from tho Bremen mine. The plant will have a capacity of to 2 tons per day, and if the process be practicable as Prof. Kearsing believes, a large plant of at least 100 tons per day will be built Then the hundred, of millions lying idle in sight in the vast orc zone to the northwest of the town will be utilized With 5000 miners at work on Chloride Flat, Silver City will vic with Butte, Virginia an(