Limestone rubble fr.20-40 and 40-70
Crushed stone
Crushed stone (colloquially, crushed stone) is an inorganic, uncoated, loose material with grains from 1 to 10 centimeters in diameter. It is formed in natural conditions by the natural fragmentation (for example, weathering) of larger fragments. It is artificially obtained by crushing coarse-grained rocks.
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