These can be most advantageously used on thick seams 6 to io ft.
Prince Andrew glanced at Kutuzov's face only a foot distant from him and involuntarily noticed the carefully washed seams of the scar near his temple, where an Ismail bullet had pierced his skull, and the empty eye socket.
He glanced down at the expensive loafers that now contained tiny grains of sand he'd never be able to flush out of the seams.
Sublimed sulphur also results from the spontaneous combustion of coal seams containing pyrites.
Europe generally, the principal coal seams occur in the Upper Carboniferous, while the Lower Carboniferous is mainly composed of marine deposits, with, however, the first bed of coal near its summit.