1) This described actions designed to stop a coal-pit from operating, probably by blocking the shaft with debris.
In 1698, three colliers maliciously sett on fire a Colliery of Richard Armitage in Honley, so that he could not get his coals: soon afterwards, in a further attack, Jo. Armitage hired Joshua Hallas … to throw in a Coalpitt in Shaw Ing belonging to the same Richard Armitage, Honley. In Colsterdale, in 1721, colliers were hindered by workmen throwing in each [pit] and filling up their works . In Southowram, in 1777, men were warned not to throw in, crush or prejudice the Coal Mine.