ers there are yet completed. The accompanying photograph shows Three great automatic iron ore unloaders, the first available amd exploitable 11,000,000,000 tons of bitu- them, side by side, each in operation but in different of their kind in the world, will be in operation upon minous coal; from… … 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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Internet Archive · Public domain (published before 1931). Free to use for anything.
