Asphalt stone

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a limestone found impregnated with asphalt.

See also: Asphalt

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
After successfully using a number of Weir Minerals products at its site, Pattison Sand wanted a custom-designed plant capable of producing more than seven materials, including: concrete stone, road rock and base material, asphalt stone, asphalt chips, railroad ballast and manufactured sand.
It is crushed to 14-20 mm for asphalt or ready-mix; 5-14 mm for concrete aggregates; 5-10 mm for asphalt stone, and so on.