Arizona republican., 1897-09-30
Mines
 and
 Mining.
THE METAL MARKET.

THE METAL MARKET.
 New York, Sept. 29.-Silver certif- cates. 541h@56; silver bars, 531 F; Mex ican dollars, Al.
 PERIPATETIC MINING MACHINE. Shelter and Equipment for Testing
 Ores on Wheels.
 At the Pullman car works there is now approaching com Ietion novel piece of ma chinery designed to be used in prospecting for gold, says the Chicago Times Herald. This machine which is being built for the Railway Gold Milling company, appears from the exterior to be a Pullman sleeping or dining car, but within, instead of be- ing fitted up with bertns or tables, it is supplied with all the appliances that go to make up r complete gold milling plant. The body and trucks of the car are of the standard Pull man construction and strength, and all the mill machinery has been made by the manufacturers. The machin- cry is now being placed in position, and the car will be taken to Arizona or California where it will receive its first practical test in the gold fields. The milling plant may be briefly described as follows: At one end of the car, which for distinction may be called the front end, is placed the boiler and steam engine. Next to these is a standard rock breaker, wherein the ore is principally crush ed, and then comes a stamp mill, where the ore is reduced to pulp. From the stamp mill the material is run over amalgam plates, which re- tain all of the free gold, and such of the precious metal as is still in combination is caught by a concen- trator. This train of machinery oc- cupies about two-thirds of the length of the car, the other third being talk en up by an office and stateroom with berths for eight persons, buffet and an assayers' laboratory.
 As auxilisries to the Pullman car are two other cars on which the ore is reduced by chloriI ation and lixi- viation. These are for ores which resist the amalgamation and con- centration processes. One of these cars is furnished with a roaster, dry CT and smelter, and the other with a series of tanks for the liQuefactiOn operations.
 George Wirt Bowman, president of the Railway Gid Milling company, had the following to say about the new enterprise.
 "Tl , railway g@d milling and test ing system is brought forth in answer to a practical demand. There is lit tie use in discovering mines or min eral leads and expending money in developing them unless one is pre- pared with mechanical and other ap- pliances to extract the precious met als from the ore.
 What are commonfy termed mines are simply prospects up to the hour that they commence to pay net profit to the discoverer or owner. When the ore output of a prospect discovery pays $1S per day net profit, 1t earns 10 per cent annual interest on fixed value of S50,000, hence can be sold for that amount on sight, or for S1OO,0O0 on per cent basis. Any man familiar with the mining inter ests of America, and familiar with the gold fields, will give you the conser- Vative number in the thousands of
 
 will verify the foregoing statement. Careful investigation gives us the fact that Chicago capitalists alone have now over $20.00O, GOO invested i,l such properties, nearly all of which are TOW abandoned. A ride through the Rocky mountains mineral district Will disclose hundreds of thousands Of dollars worth of idle mill machin- cry, and millions of tons of valuable ore on the dumps and in sight by their side. The metallurgists, chem. 1sts and assayegs will inform you thaf the ore carries from S6 to S30 in golf per ton. A conservative mining ex pert under oath will affirm that tht quantity of ore in the veins or leads is as unlimited in extent as coal il Pennsylvania. The mill builder vii as positively affirm that all the ma chinery is of the most improved char acter.
 Where, then, is the trouble? Sim ply that the essential part of the ma chinery is as unfitted for the savin. Of the values in that specific ore a. the same machinery plant would b. to make the best four out of wheat Ninety-nine prospectors or discover CTS of mines out of every one hundre, are extremely poor men, and les than one in a hundred ever receiy any benefit through their discoveries simply from the fact that they ar as helpless as the Iowa farmer a one time was when he hauled hi wheat 200 miles with an OK team t, grist mill, and, as he said, ate u all the flour going home Ore is nov being carried by rail from old Mex leo to Utah, to obtain a mill run tes 10 ascertain the values therein, il quantities of ten to twenty tons, bu most of all to ascertain the characte or machinery necessary to save tn Vaiues and reduce them to bullion thiS at enormous expense, and witt unsatisfactory results. for the req son that the limited amount of Sd, twenty tons is usually insufficient |, q i. l ..