The
concrete mixing plant (front) and the trestle for the whirley cranes
(back) under construction, August 1961.
The White River flows below the
concrete plant.
Thomas E. Petermann Collection (S-2005-89-62)
A used mixing plant was purchased from the Niagara Falls Power Project in New York in 1960. It was taken apart and shipped by rail to Gateway.
Cement and aggregate (crushed stone) were stored in the plant above a structure which sorted the aggregate into various sizes. From there the materials went into batching hoppers to be measured and weighed and then into one of four mixers, each capable of holding four cubic yards of concrete.
Along with the tracks for the whirley crane gantries, two sets of railroad tracks were installed on the trestle, allowing for the coming and going of the flatcars hauling giant buckets of concrete.
Size
of aggregate: 6 inch, 3 inch, 1½ inch, ¾ inch |
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