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Crane and grab mounted on a Barge |
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Description
These appliances are used for discharging coal and other heavy material, as well as for dredging purposes. Generally speaking, the mechanical details are identical, the cranes only differing in the way in which they are mounted according to the purposes they have to serve. Thus they may either be fixed on quay walls, mounted on wheels, or installed in suitable barges, the latter being more often used for dredging purposes, as shown in the Figure. |
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