Several shots taken from a gondola crossing over the Columbia River. Shots of an instrument in the water for measuring the intensity of the current. WIDE ANGLE SHOT of a man in the moving gondola. Several shots of three specialists in the forest doing surveying and geology work: they’re hacking branches off of trees with an axe to clear a path. WIDE ANGLE SHOT, PAN LEFT of the Bonneville power plant and dam. Several shots of a technician climbing the ladder of a pylon. Once on the platform, he blocks a cable with a tool. MS of the bridge straddling Mica Creek. A sign reads "Mica Creek". Shot of two technicians studying maps on the shore of the river.