Mine Conveyance Safety Dogs

CIM Bulletin, 1950

IN the past four years Ontario Mines have made great progress in the development of reliable mine conveyance safety dogs. History shows that, prior to 1945, a rope failure on a descending conveyance was usually followed by unsatisfactory safety dog operation.
Keywords: Arthur, Ontario, bell crank, drawbar, failure, free-fall, conveyance, Conveyances, Mine, Mines, Rope, Ropes, Safety, test, Tests