Construction of the ALCAN Highway

VS bearded men walk from woods and begin chopping at saplings and preparing surveying equipment / VS men at a tent with one in the foreground using an ax / A tractor pulls a man seated on a moving platform; another pulls a large construction device / VS men wearing face masks cross a dusty road as a truck drives past and they start digging; two stand up, removes hats and beat the dirt off; one offers the other a cigarette / Men suspended from a rock face dig and others below swing a sledgehammer on a fallen boulder / A steam shovel loads a dump truck with others parked nearby / Men scrape at a roadway and another digs in a gutter / Heavy equipment roll on a gravel road / Note: exact day not known