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Blast at Bas Obispo, Sept. 19, 1907 (2/3)
"Powder used, 9,600lbs., Rock displaced 29,640 cu. yds. 72 on one side, 106 1/2 on the other. "
Handy (Photographer), Hallen (Photographer), Special Collections/University Archives (Publisher)
1907
Culebra Cut, Culebra
View looking north along bottom of canal. August 26, 1913
Handy (Photographer), Hallen (Photographer), Special Collections/University Archives (Publisher)
1913
Operation of Pedro Miguel Locks
Dredging fleet entering east ca chamber of lock. Looking north. Oct. 24, 1913.
Handy (Photographer), Hallen (Photographer), Special Collections/University Archives (Publisher)
1913