A little after 7 a.m. on April 28, 1924, miners at Benwood in Marshall County were preparing their work areas for their daily shift. One miner approached a roof fall, thinking incorrectly that it’d been examined by the fire boss.
His open light ignited firedamp, which is an explosive mixture of methane and air. An explosion ripped through the mine, which was dry and dusty with poor ventilation and sprinkling practices. The explosion spread quickly, and slate and debris blocked portions of the main entry.