Cement delivery system for lock construction (1 of 2)

Photograph showing a view of two cars carrying hoppers that transport cement to the place needed. The cables that hauled the cars appear along the center of the tracks. One car is probably full of cement, and the other is empty, as it returns to the crane at the upper level on its way back to the mixing plant for another load.
Abstract/Description: Photograph showing a view of two cars carrying hoppers that transport cement to the place needed. The cables that hauled the cars appear along the center of the tracks. One car is probably full of cement, and the other is empty, as it returns to the crane at the upper level on its way back to the mixing plant for another load.
Subject(s): Boats and boating
Soo Locks (Mich.)
Date Created: 1911 (approximate)