Arizona weekly enterprise., 1882-07-15


 receive the utmost attention, as they are the sul ject of inquiry amongst mining men al.d investors. The Territory also contains extensive indications of lead, gold ores and coal, which should be prop erly placed before the world
 In general the exhibits will naturally fall into broad classes like the following: I-Tree milling silver ores.
 D--Base silver ores.
 III-Oxidized copper ores.
 IV-Sulphureted copper ores.
 V-Lead ores.
 VI-Lead ores with gold and silver.
 VII-Free gold ores.
 Sulphureted gold ores.
 IX-In connection with the above, iron ores and limestones suitable for huxes, and coal.
 X-Products of mills and reduction works.
 XI-Plans and models of mines, mills and chemical factories.
 XII-Clear and detailed descriptions of the methods adopted for treating the ores, with plans of machinery.
 XIII-Eack district should send one sult of specimens of country rock, show ing the limestone, shale, quartzite or granite, and especially any eruptive rocks that occur in the district;
 XIV-Statistics of ore mined, ore treated and bullion produced since the beginning of mining operations, and especially for the year which has elapsed since the collection of the census statis- tics up to June 1, 1882. In addition, the wood, water and agricultural resources of each district should be given; or failing the existence of these, the usual source of supply should be stated.
 In regard to the twelfth and thirteenth classes of exhibits, 1 wish to say that this exhibition can be made of great rerma- nent value to the mining profession if the managers of mills and other reduction works will give to the Commissioner a short account of the methods used in re- ducing their ores. In mills, the weight of stamps, number of drops, size of screcns, single or double discharge, weight of pan charge, length of pan run, use of chemicals both as. to quantity and mode of adding them, mode of handling quick silver. amalgam and bullion. and the quantity of each, proportions of settling tanks, all questions that affect losses, whether in shines or tailings, are some Oi the points desired. In smelling works the style of furnace, character of ore, fuxes and fuels, the losses in slag and fue dust, the management of sulphuret ores, and everything that relates to ob- taining merchantable product in one operation, are in place. It IS to be re- membered also that tie attention of thinking men will be aroused most cer- tainly by descriptions of experiments, novel arrangements and the frank state ment of difficulties, whether overcome oI not. A careful selection of specimens showing the country rocks connected with the ores will have great interest for expe- rienced mining men. Especially import ant are the eruptive rocks which usually occur ill dykes and are abundant ill Ari- zona. The exhibition will be attended | by scientific men who are Interested iI such collections, and who will freely give their aid in making the ore deposits oi Arizona understood and appreciated | Specimens of ore should be accompanied by an assay giving the amount of gold silver, copper and lead. It is intended tc collect all such facts into a suitable publi cation. To increase the value of thi; work it is requested that short state ment should be sent from each distric l giving the position, altitude, surface char acter (whether mountainous or rolling) population and other facts of the district at large, and also the especial facts con nectoa with each migle represented it t echjJit Each district will also supply case to contain its exhibit, and such case when intended for table should be tw, and one-half feet wide, fifteen inche high at the back and eight inches high il front, inside measurement, with q sasl cover hinged at the back; length sufficien to contain the specimens sent. Wal cases to contain specimens should be sil feet high and eighteen inches deep. ] any district omits to appoint a commis sioner, any person desiring to exhibit cal send his specimens marked as above, pre- paying charges, and write to the neares appointed commissioner, asking him t take charge of his exhibit.
 District Commissioners, when aP pointed, are requested to conmunicat with me for the purpose of securing har monV of action. Communications on tn subject of the exposition may be ad dressed to me or to Thomas K Sorln Assistant Commissioner, Tombstone, A. T
 DIRECTIONS FOR PACKING.
 Select fresh specimens if possible
 2. Wash them clean, using tootl brush to remove hardened clay
 3. Do not pdste any label on them.
 1. Write separate label for each speci men, giving name of mine, district county and owner.
 ,. If necessary to mark the specime use red paint and small camel's hai brush, and make small figures.
 6. Wrap the specimen with its labt in paper.
 z. Pack in strong box and .fu H boa, so as to prevent shaking. Do nc use sawdust, but pack in with paper. 8. Paste the printed address attache to this circular on one end of the boz r and also mark the top with ink. Pacl = ages not marked with ink will net be T, ccived by the railroad.
 s All packages should be addressed ; . follows:
 ] xM JOHN A. CHURCH,