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Foster's formula |
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Foster's formula [′fȯs·tərz ′fȯr·myə·lə] (mining engineering) The empirical formulaR= 3√(DT) for determining the radiusRof a shaft pillar, whereD= depth in feet andT= thickness of lode in feet. 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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