(No subject)

Richard Townsend
 

I have at hand a selection of "bulletins" from the Colorado & Southern from the 1930s through the 1950s. They generally are one or two sentences and refer to things like a new siding being in place, specific operating instructions, and the like. One I am interested in following up on is from November 11, 1936, and says, "Trains handling Great Northern dump cars loaded with iron ore must not exceed a speed of 35 miles per hour." My question is, what would a "Great Northern dump car" have been in 1936?  
 
Richard Townsend
Lincoln City, OR
 

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