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"Three-Level" Construction...in new diesel shop enables workmen to service all parts of a unit at one time. Railroad employes [sic] are shown here taking advantage of the new idea in shop construction.

Today...diesel locomotives like this switch engine in the Union Pacific yard move smoothly across millions of miles of U.S. tracks. Burning of oil has cut down on coal consumption to the point where cinders are becoming scarce for city streets. …