hanging coal

hanging coal

[′haŋ·iŋ ¦kōl]
(mining engineering)
A portion of the coal seam which, by undercutting, has had its natural support removed.
References in periodicals archive ?
So much paper trading goes on these days, and some of the traders are hanging coal onto other drivers like oil prices," says David Price, editor of the Steam Coal Forecaster report published by coal industry analyst the McCloskey Group.