Great video Mike.
Just for the interest, snow can certainly be a hazard on the tracks, but I can never recall a time when we were stopped by snow! Even on branch line working there was always a snowplough fitted loco on hand to clear the way. As for slipping on greasy, or snow covered lines, (we never knew back then about normal snow, different snow, good snow or bad snow!!) the loco sander never failed us. Obviously there were winters of really heavy snow that just maybe slowed us up a mite, but can't recall ever having been stopped completely by the stuff. Worst thing really was having to jump down between loco and coach to uncouple for the loco to run round the train for the return trip, I did come a cropper a couple of times, once by slipping on the railway sleepers and battering my elbow off the loco buffer, and the other when I slipped leaping down on to the track and smashing my jaw off the loco coupling. But, we were tough back then, no health and safety at work to interfere with the work!! We just cursed a few choice expletives,
spat out the odd tooth, wiped away the blood, and on our merry way!!