W. FRANK M’CLURE, square miles. To a depth of 700 meters there are yet completed. The accompanying photograph shows Three great automatic iron ore unloaders, the first available and exploitable 11,000,000,000 tons of bitu- them, side by side, each in operation but in different of their kind in the… … Four machines, side by side, can be used in the aver- decade has been 43.5 per cent: In 1899, when the age vessel at one time. Each machine is expected to THE SCOOP GATHERING UP ITS LOAD. deepest shaft was but 594 meters, the output amounted remove 300 tons of ore per hour when fully perfected. to…
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