Interior shots of electrical power control room showing large panels covered with switches, dials, buttons, operators at work, one sitting at console and doing calculations on slide rule. CUs of dials, indicators fluctuating over scales. Several shots of gantries supporting transformers, circuit breakers, insulators, in large sub stations. LACUs of insulators, resistors, circuit breakers. LAMS of top of power pylon, TILT DOWN to LS of next pylon in the distance, two power line stretching between the two. Shot of group of men moving large electrical component, TILT UP to gantry in background. CUs of insulators. CUs of dial, needle moving across scale of megawatts.