Snow is hard to photograph! To get snow to render white (instead of grey) you need more exposure than your light meter would have you believe. And because of all the contrast typical of snowy scenes, it’s hard to preserve shadow detail without blowing out the highlights completely. So, after going to the darkroom with quite a bit of pessimism, I would have been pleased to find any keepers at all on this roll.
Not that these are exposed all that well, technically. The shadows in some of these are REALLY dark. But here's a thing that seems true: despite all the technical discussion to be had regarding exposure—specifically, preserving highlight/shadow detail—intentionally clipping highlight/shadow detail (or over/under exposing in-camera) is an important artistic tool. In fact, it seems like part of the point of black and white photography.