Arizona republican., 1917-11-14
Central and Madison St.

 be seen much native copper. The sil- yer lead display is also very fine. Yavapai county has some magnificent specimens in gold, silver, copper, lead, zinc, tungsten, molyodenum. vanadium, manganese, antimony, cinnabar, alum mum, iron, lime, granite, tufa.
 A magnificent large block of onyx polished on two sides attracts much attention in the Yavapai exhibit. There is shown also some granite blocks which are being used to face the Yav- apai county court house. Another in teresting specimen shown is a, piece of rock containing a gold nugget. From the mine out of which this was taken the owner shipped 39 pounds which netted him $1,700. The Arizona Bing- hamton copper display from the Mayer district is also very creditable one. This is an old property, but only re- gently came into prominence because of the rich strike of ore recently dis covered. The Wyoming Shovel com pany have an exhibit that Is very in teresting to the prospector and miner. Copper Queen Display Perhaps the most remarkable display in the whole building is that from the Copper Queen, because of the magni- | tude of the specimens of malchite and azurite.
 Gypsum is practically a new indus 1 try for Arizona, but as there are such quantities and so many uses to which it may be put that mineral is now receiving considerable attention by the state mineralists.
 Pima county perhaps shows the larg- est variety of specimens of any one county, and they have 8 novel method of showing where each specimen comes from. A large map of the county Is on the wall, and the specimens are nicely arranged on the table in front of this map and ribbons are run from the specimen to tho exact point on the map where it belongs.
 The New Cornelia has a fine speci- men of the teaching process used by that plant. There Is the finished cath ode on display and an explanation of l the process before ones eyes. They have 17,000 of these cathodes working 1 night and day, and by this method produce 6,00o,o00 pounds of pure copper per month.
 oatman District Ores l Mohave county has fine display. | especially ores from tho Oatman dis
 trict. There lie some rocks that pro- duce $300 to the ton from the famous
 Tom Reed. In this county practically every orc of any commercial value is I found.
 W. A. Bryan of Denver, who has charge of the United States Vanadium
 exhibit now being conducted daily. is the son of Harry S. Bryan, general
 manager of the Minerals Recovery company of Denver, from whom the
 5O-ton mill now being installed upon
 the company's property was purchased The small mill used by this company
 at the mines building is an exact replica of the larger ono being erected
 near Kelvin Junction, where this rich orc is found in such great quantities The great demand now being made by the government for this precious mineral makea st a very valuable
 product indeed. and Arizona will doubt
 less be classed among the worlds
 largest producers of this rare necessity 1 Univsrsi<y's Exhibit
 Tho University of Arizona has g
 corps of professors in attendance giv-
 ing those interested useful information
 They are Professors O. F. Willis
 George R, Fansett, g. c. Dicienson ant Milton A. Allen. There are daily leo
 lures with moving pictures on mining
 minerals, first aid, war gardens at thu
 mines. There is demonstration witt the blowpipe and after the demonstra ton Prof. Fansett is glad to answer
 any questions that visitors may wisi
 to ask. From Ii to 11:8o every morn ling 0. A. Herbert of the United State
 bureau of mines will speak on first ait and u1ne rescue Professor Allen wtl talk on war minerals, explaining wher thers b . shmtage of the mineral used tf the wan and show how to pro
 duoe more of these much needed min
 erals, All thsse various talks arc in
 tsresttng and worth onos time t
 listAn to.
 One thing that every prospector an'
 mine owner should know Is being fur
 nfxed by the University Bureau c