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Humphrey's spiral |
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Humphrey's spiral [′həm·frēz ‚spī·rəl] (mining engineering) An ore concentrator consisting of a stationary spiral trough through which ore pulp gravitates; heavy particles stay on the inside and lighter ones climb to the outside. 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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