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See Why Everyone Is Talking About the Wood Ranger Power Shears [复制链接]

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发表于 昨天 04:35 |只看该作者 |倒序浏览
In 2010, folks in every single place have been riveted to the story of the 33 miners in Chile trapped 2,300 feet (700 meters) beneath the Earth's surface in a copper and gold mine. The miners spent greater than two months there, getting meals, air and letters from cherished ones by means of bore hills drilled to their location in a protected workroom. Meanwhile, the larger-scale drilling of an escape shaft made gradual progress. Finally, on Day 69, rescuers lifted every of the miners out alive. The saga reminded the non-mining world of a often invisible fact. Deep beneath the floor of the Earth lie a few of essentially the most frightening factories on this planet: underground mines. An underground coal mine can drive 2,500 feet (750 meters) into the Earth and different varieties even deeper -- uranium mines can attain 6,500 toes, or 2 kilometers. Mining websites have modified quite a bit from the pictures we have now of the nineteenth century when men with shovels toted canaries to verify the air underground was not toxic.

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