Prop-free | Article about prop-free by The Free Dictionary
A face with no posts between the coal and the conveyor used to remove it in longwall mining of a coal seam.
References in periodicals archive
Cornely's set is fairly prop-free
, except for an elegant, late-appearing bedchamber.
As he addressed about 1,000 of the 10,000 refugees remaining in the tent community, he stood alone and prop-free