Arizona weekly enterprise., 1882-06-17

residents of each mining district to choose a representative before the 16th day Of June, and he has also appointed me Commissioner for the whole Terri tory. Under this commission I hereby notify all District Commissioners that collections of ores and other exhibits should be sent properly packed and charges prepaid to one of the following points: Yuma, Maricopa, Tucson, Ben son, Wilcox, Bowie, in time to be at the railroad station before July 10th. As to the kind of exhibits desired this is neces- sarily governed by the character of mining resources in the Territory Ari- zona has already become remarkable for it's free milling silver ores and oxidized copper ores, and both of these should receive the utmost attention, as they are the subject of inquiry amongst mining men and 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:
 Free milling silver ores.
 II-Base silver ores.
 -Oxidized copper ores.
 IV-Sulphureted copper ores.
 V-Lead ores.
 VI-Lead ores with gold and silver.
 VII-Free gold ores
 NIIl-Sulphureted gold ores.
 IX-In connection with the above, iron ores and limestones suitable for iuxes, 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 suit 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 perma- 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 screens, 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 smelting works the style of furnace, character of ore, huxes and fuels, the losses in slag and | flue dust, the management of sulphuret ores, and everything that relates to ob taining a merchantable product in one operation, are in place. It is to be re membered also that the attention oi thinking men will be aroused most cer. tainly by descriptions of experiments novel arrangements and the frank state ment of difficulties, whether overcome ol not. A careful selection of specimen: showing the country rocks connected witt the ores will have great interest for expe rienced mining men. Especially import ant are the eruptive rocks which usually occur in dykes and are abundant in Ari zona. The exhibition will be attended | by scientific men who are interested il such collections, and who will freely give their aid in making the ore deposits O 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 t. 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 giving the position, altitude, surface char acter (whether mountainous or rolling) population and other facts of the distric at large, and also the especial facts con nected with each mine represented in th exhibit Each district will also supply case to contain its exhibit, and such case when intended tor table should be tw, and one-half feet wide, fifteen inche high at the back and eight inches high il front, inside measurement, with 8 sasl cover hinged at the back; length suficien to contain the specimens sent. Wal cases to contain specimens should be si feet high and eighteen inches deep. any district omits to appoint 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 ar pointed, are requested to communicat with me for the purpose of securing ha1 monV of action. Communications on th subject of the exposition may be ad dressed to me or to Thomas R. Sorir Assistant Commissioner, Tombstone, A. I
 DIRECTIONS FOR PACKING.
 1 Select fresh specimens if possible
 2. Wash them clean, using toot brush to remove hardened clay.
 3. Do not paste any label on them.
 4. 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 camels hai brush, and make small figures.
 6. Wrap the specimen with its labe in paper.
 1 :. Pack in a strong box and .fH Ht