Image Adding a length of drilling pipe at oil well in Seminole Oil Field, Oklahoma. Clamps are put in place
Image Adding a length of drilling pipe at oil well in Seminole Oil Field, Oklahoma. Lower end of traveling block is attached to pipe in rat hole by means of rope operated off winch
Image Painting a derrick, Seminole Oil Field, Oklahoma. Notice lack of safety belts. Painters say that safety devices slow them down too much.
Image Detail of cleaning apparatus on portable type mechanical hop picker, Yakima Chief Hop Ranch. Yakima County, Washington
Image Repickers who pick over the hops after original picking by portable-type mechanical picker, Yakima Chief Hop Ranch, Yakima County, Washington
Image Repicker or cleaner who works at a stationary-type mechanical hop picker. Yakima County, Washington. Fifteen persons do the work of 100 hand pickers
Image Stationary-type mechanical hop picker. The vines are brought to this shed and are fed into the machine picker. Yakima County, Washington