Quarry on the grade
A quarry has been found on the current UPRR grade between Cisco and Soda Springs. Insofar as the current UPRR grade is also the old CPRR grade, the question comes to mind as to when this work was done.
Photos of the quarry are attached, if anyone has an idea as to the use for the quarried stone, and the year(s) the work was done, I'd appreciate your thoughts.
—G J Chris Graves, NewCastle, California