
US Bureau of Mines Collection - C-849-BC Ore-Dressing And Hydrometallurgical Plant Power Substation: Power at 2400 volts from the distribution center is received at this substation. Shown are the transformers, switches, and breakers, of a 1000-kv. -a. power bank and two 75-kv. -a. light circuits where the power is reduced to the required voltages and distributed for two of the pilot plants of the station.