Quarries pl. : of Quarry

Example:
How many slate Quarries are there in Eastern Pennsylvania?

Taxonomy
quarry, free encyclopedia, rock, quarry stones, limestone quarry, Stone quarry, construction aggregate, Coquina, water inflows, Quarry Products Association, search, Unsourced, colocated, requirement, large amounts, level areas, shallow groundwater, surface water.

Defination from the web:
quarry is a type of open-pit mine from which rock or minerals are extracted. Quarries are generally used for extracting building materials, such as dimension stone, construction aggregate, riprap, sand, and gravel. ...