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Two workers and quarry in background
miner underground mining gold
Two young guys in a working uniform and protective helmets, sitting in a low tunnel. Workers of the mine. Miners
Birmingham Alabama coal miners were unionized by the CIO in 1934 after strikes and resistance from both the industry and state government. 1937 photo by Arthur Rothstein.
20 minerals: microelements and macro elements, useful for human health. Fundamentals of healthy eating and healthy lifestyles.

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