A rotary might be out for days clearing the tracks after a severe blizzard, and thus a camp car or two was often included in the consist to give relief crews a place to sleep and eat. Occasionally the camp cars were specifically assigned to the plow train. Plow trains often included a flanger in the consist to clear the flangeways inside the railheads, especially if the snowplow was neither a Rotary nor a Russell, both of which had their own flanger blades." John C. La Rue, Jr