open-pit quarry

open-pit quarry

[¦ō·pən ¦pit ′kwär·ē]
(mining engineering)
A quarry in which the opening is the full size of the excavation.
References in periodicals archive ?
Mohawk Garnet operates an open-pit quarry about six kilometres northeast of Wahnapitae.
The company has assayed about 50 per cent of the garnet deposit so far, and has determined the lifetime of the open-pit quarry would be in excess of 100 years at current rates of extraction.