open-pit

[ oh-puhn-pit ]
/ ˈoʊ pənˌpɪt /

adjective Mining.

noting or pertaining to a type of surface mining in which massive, usually metallic mineral deposits are removed by cutting benches in the walls of a broad, deep funnel-shaped excavation.

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Origin of open-pit

First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for open-pit

  • The cableway is so economical in its working that it has greatly advanced the process of "open-pit" mining.