@CAPPilot posted:Fans meant it was equipped with a mechanical, or later an electrical, circulating fan to move the cold air around. Always wondered what stage icing meant. Tried looking it up a while back and lots of references to it but no definition. Maybe our railroaders here can help us out.
According to this site...https://www.psrm.org/trains/freight/fgex-56415/
"FGEX #56415 is an RS-type car, meaning refrigerator cars using ice or ice & salt to cool their cargo space, and was one of 1,567 cars in FGE’s #55000-56566 series of ventilated Class C cars. It has a steel underframe; wood sheathing; 4-wheel FGEX trucks; AB brakes; a galvanized steel roof added in the late 1930s with walkway; rooftop ice hatches into which blocks of ice were dropped at icing stations on its route (“stage icing”); and adjustable ice grates. Its ice capacity is 9,600 lbs. (chunk), 10,200 lbs. (coarse), or 10,600 lbs. (crushed). Electric circulating fans were added in later years."