open-pit
[oh-puh n-pit]
- 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. 2018
Examples from the Web for open-pit
Historical Examples
The cableway is so economical in its working that it has greatly advanced the process of "open-pit" mining.
The Romance of Modern MechanismArchibald Williams