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Notes:
Title supplied by cataloger.
Print in album volume MDWSC, Contract 14, Wachusett-Coldbrook Tunnel, Tunnel East and Shaft 1, Volume 3, Chief Engineer set
Typed on back: Motor spotting cars for loading five-car trains with batched concrete aggregate at foot of Shaft 2. The car next the motor is in position to receive concrete from chute. Man standing on platform at left operates gate at bottom of chute.
Notes (acquisition):
Massachusetts Metropolitan District Commission; Massachusetts Department of Conservation and Recreation