gthwise on the dock while be made to empty into a hopper at the dock in ease it emerge as pig iron, vast improvements have been made. the heavy walking-beam traversing the top of the is desired to stock the ore. This hopper may either be So complete has been the evolution of economic me- main… … devices which excited the MECHANICAL OBE UNLOADEB—IN THE COUBSE OF CONSTBUCTION. first mentioned bridges, greatest admiration. Still thus making a continuous it did not entirely satisfy run of two hundred and the iron ore men. They twenty-five feet in case it saw coal shippers in pos- is desired to…
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