OMIKRON / SCIENCE PHOTO LIBRARY OMIKRON / SCIENCE PHOTO LIBRARY
Chinese laborers and dump carts making a fill the bring the road-bed to level at Heath's Ravine, (80 feet deep), about 82 miles from the Sacramento terminal of the Central Pacific. Note how the men worked on two or more levels to increase the number of forces that could work in any area, speeding construction. Photo by Alfred A. Hart.
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