05/28/2026
Yellow door, green door
The MRM’s own CNR boxcar 575520 has received a new paint job since its arrival in Aug 2021. Note the yellow loading door. CN really got into the colour coding of whole boxcars and/or their doors in the 1960’s and 1970’s, phased out by the 80’s. (Apparently the CNR had a range of door colours with different meanings but the main two seen travelling the roads in NS were the yellow and green door CN boxcars.) Yellow doors meant clean loading only: no dirt, odours, debris or anything else that might affect the products had been or could be placed in the boxcar, it was ready to accept its clean freight, mostly newsprint and other paper products, which would remain pristine until reaching their destination. Green door boxcars, on the other hand, could carry freight that did not need such five-star accommodations, in NS this was primarily raw forest products like logs. This system was easily recognizable to anyone loading the cars and effective until replaced by electronic or computer coding of freight types in more recent times. The logs being loaded at the Middleton station yard in 1956 would have predated any colour-coding and might even be going into a DAR/CP boxcar at that time (anyone know?)
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