Miners' Circular, Volum 53

alined American Standards Association automatic brakeman brakes bucket bumper Bureau of Mines cage or skip causes chutes circular clearance conical drums couplers coupling derailments drift drums dumping electric electric locomotive engineer fastening fatal feet figs FIGURE gates grades hand tramming handling haul haulage accidents haulage crews HAULAGE EQUIPMENT haulageway hazard hoisted or lowered HOISTING AND HAULAGE hoisting cable hoisting rope hoistman inches injuries inside of empty inspected installed light light rails loaded cars locomotive frame main haulage manways material metal mines Metal-Mine methods Mines Bull Mines Miners motor motorman moving nonmetal Nonmetal-Mine Accidents open-cut operating percent permitted placed platform prevent pushed rails repair ride roadbed rope diameter Safe Practices safety devices safety dogs sheave side signal system skip tender socket speed station steel stop storage-battery locomotives strands SURFACE HAULAGE switch timber train transportation trip trolley locomotives trolley pole truck underground vertical shafts wear wires zinc