Workers loading aggregate into a cement mixer for street construction, [s.d.]

Photograph of workers loading aggregate into a cement mixer for street construction, [s.d.]. At center, two workers move have backed the bed of a pickup truck to a cement mixer at left. Each man has a hand on one side of the bed, seemingly prepared to tip the bed into the mixer. Behind the mixer, a third man in a western hat can be seen. At right, a stack of sacks stand in front of a tall, vine-covered building. The aggregate being loaded is brought from a central proportioning plant.