| Burlington Northern Railroad rotary snowplow 972559 at West Burlington, Iowa on October 22, 1983, Kodachrome by Chuck Zeiler. Number 972559 was built by Alco ( Cooke ) in September 1915 ( c/n 54787 ) as C&NW X-4, eventually acquired by the NP and numbered 46 ( later, 47 ), converted from steam to electric power in 1966 with the electric power supplied by a trailing locomotive. At last report, RSPU number 972572 ( former NP F9B 6701B ) was the power supply. |