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wellhole |
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wellhole [′wel‚hōl] (mining engineering) A large-diameter vertical hole used in quarries and opencast pits for taking heavy explosive charges in blasting. The sump, or portion of a shaft below the place where skips are caged at the bottom of the shaft, in which water collects. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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