plural of coal seam

A cellar or other compartment for storing coal. / A hole in the pavement with a removable hatch, leading to an underground coal bunker.

Bituminous coal, as distinguished from hard coal (anthracite).

bituminous coal

(UK, Scotland, dated) cannel coal

Coal that burns without a flame; anthracite coal.

A bituminous or hydrogenous coal yielding a high proportion of volatile material, and therefore available for the manufacture of illuminating gas.

coal coming from the ground, as opposed to charcoal / Silky fibrous layers of charcoal, interlaminated in beds of ordinary bituminous coal.

(mining) mineral coal

the type of coal used in coal-fired electrical power plants