CAVE CREEK — Ten steel rods, each weighing 1,000 pounds, pulverize gold-bearing rocks into sand, releasing the precious metal from the ore, which is then further refined with mercury to extract every ...
CALICO • The sounds of a 500-pound hammer crushing ore will echo through Calico for the first time in more than 100 years, as an 1870 vintage stamp mill found at the silver rush-era ghost town is ...
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