rial than the pow- upon one shaft. The high pressure cylinder is 21 erful suction. dredges which are associated with the inches in diameter; the intermediate, 34 inches; and about him. name of Lindon W. Bates, an American engineer. In the low pressure, 39 inches in diameter; the common The blind… … ation of dredging is in process. The twin propellers at means of derricks, two of which are attached at each HOW THE FANS ARE MADE. bow, and they are capable of dredging to a maximum the stern are also each direct-connected to a 125-horse- power motor. Two 30-horsepower motors are carried inches in…
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