Specifications. 2922. Carrier-current and relaying equipment for Alcova, Beaver Creek, Casper, Cheyenne, Gering, and Greeley substations and Estes, Flatiron, Kortes, and Seminoe power plants, Kortes unit, Oregon Trail Division, Wyoming Transmission Division, Nebr.-Wyo., Missouri River Basin project, Colorado-Big Thompson project, Colo., Kendrick project, Wyo.