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Secondary Activity Of Mining Gold Ore

Gold Activity 2012 Arizona Geology Magazine. 7 Sep 2012 The decadelong rise in the price of gold from less than 400 per renewal of gold mining and increased exploration activity in Arizona. A Tertiary age, epithermal quartz vein supplies ore from the 600 to 900 feetdeep levels of the mine. Prior to 1942 high A1 grade veins were mined, resulting in the

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Secondary Activity Of Mining Gold Ore

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