Setting Off Precision Mining Explosives
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1,369 بازدیدها·
12/27/23
که در
Discovery
Miners at Greens Creek must chip away at the mountain side 12 feet at a time using hundreds of pounds of explosives. A dangerous mixture of fertilizer and diesel are pumped into carefully placed...
بیشتر نشان بده، اطلاعات بیشتر
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