Online:Mine Safety Regulations
|Coleção||Handbills, Posters, and Decrees|
|Encontrado nos seguintes lugares:|
—Shoring timbers should be at least a handspan in width and breadth.
—Mine shafts should be shored every three paces.
—Mine shafts should not be wider than three paces nor higher than two paces.
—Mine chambers should not be excavated wider than five paces between rock pillars left for roof support.
—No shouting or other loud noises.
—No running or horseplay.
—No racing in the mining carts.