mine shaft
Sale Price:$333.00
Original Price:$999.00
sale
Mine Shafts. mine petra chord The mine shaft 75m deep connected to horizontal tunnels is filled with ground water up to 23m below shaft opening From: Biotechnology of Metals, 2018 Related terms: Coal Mine; Energy Engineering; Uranium; Nuclear Power Plant; Anthracite; Nuclear Energy; Tunnels; Japan; Germany; Coal Mining
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