When the cofferdam was completed At present, the principal scene of ac- and the river bottom laid dry, a con- tivity is the stretch of foreshore on the crete gathering dam, 33 feet in width Canadian side, reaching from the com- gathering dam was built, and 26 to 33 feet in depth, was built out… … porary construction, varied from 20 to conduct the water to the bottom of the 46 feet in width, and had a total depth wheel pit. of water against it, when it had reached Tue WHEEL Pit.—The wheel pit is a At the Bottom of the Wheelpit. out into the deepest part of the rapids, huge excavation 27 feet…
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