cinder quarry
A site extracting naturally occurring volcanic cinders in bulk for uses such as surfacing, mulch, or material mixtures.
A cinder quarry is a place where naturally occurring pyroclastic cinders are extracted from the ground, normally in areas with present or past volcanic activity. Cinders are used in roads and pathways for added traction, and are often used as a decorative mulch in landscaped areas. They are very light and porous, and are not generally suitable for construction except as an ingredient mixed with other construction materials.
The cinders come from natural pyroclastic deposits. Cinders produced by industrial fuel burning are not the volcanic material described by this quarry use.
Their light, porous form suits loose surfacing, decorative mulch, and use as an ingredient in mixtures. The definition concerns extraction rather than a plant manufacturing finished construction products.
Related definitions
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chalk quarry
A site extracting chalk, a soft white calcite material, from an open pit or an underground mine. -
clay quarry
A site deliberately extracting fine-grained clay deposits for further use, excluding incidental excavation. -
granite quarry
A site extracting naturally occurring granite from the earth on a large scale, usually as blocks or slabs. -
gravel quarry
A site extracting gravel from the ground in bulk, generally with particles 2 to 64 millimeters across. -
gypsum quarry
A site extracting naturally occurring gypsum, calcium sulfate dihydrate, from the earth in bulk. -
limestone quarry
A site where sedimentary calcium rock is extracted from the earth in large blocks or sheets. -
marble quarry
A site where metamorphic carbonate rock is extracted from the earth in large blocks or sheets. -
sand quarry
A site where loose sand is extracted from the ground or a seabed in large quantities. -
sandstone quarry
A site where sedimentary rock of compacted sand is extracted from the earth in large blocks. -
slate quarry
A site where rock from metamorphized clay is extracted from the earth in large blocks or sheets.