When I worked in a mine my job was a electric train driver/switch man. Part of the job was gathering ore from ore chutes then dumping it in a ore pass. One day I forgot to open the door on the ore pass so the train dumped 15 tons of ore on the ore pass door. My second mistake was trying to open the ore pass door with 15 tones of ore on top of it because it broke the cable and bent the rod on the hydraulic piston. Luckily they didn't fire me. Cheers!