Street scene in Flin Flon, Manitoba, showing pedestrians walking on sidewalk. MS of two prospectors walking out door of Wollaston Lake Mining and Development office. POV of mine shaft from cable car. Shots of mine train loaded with ore moving towards and away from camera. LS of residential district in Flin Flon from across water. LS of children playing in park. LS of mine shaft and smelter plant from across rugger terrain. GROUND TO AIR SHOT of PBY-5 Catalina seaplane flying over camera. CS of magnetometer cased in tail of airplane, used to detect iron veins. Shots of men removing cover from magnetometer, handling device. CU of magnetometer oscillating. CU of recording machine drawing graph.