Wow! Six stops underexposed! [Maybe more, depending on what zone you set the snow at.] And still, #3 has sort of a neat, bleak, wintery feel to it. This does say something about the dynamic range of this film! [Still, see why you are upset. Bet #3 would have been fantastic if exposed correctly.] :-( You 'prolly did not bother cleaning off the dust real well, (and your version of digital ICE wouldn't work with conventional silver B&W). I know it's off topic, but those scratches worry me... It would be interesting to clean the negative, and try to get as good a scan as possible out of #3, then tweek in Photoshop. Fraid it's never going to be fantastic, but would be a good learning exercise... In chemical darkroom, there is a solution called "intensifier" you can soak greatly underexposed negatives in. I've never found it to work real well, but it does find any traces of silver at all, and builds up some density. It does not need darkness, but is pretty poisonous, so take care. Again, not going to be fantastic, but may be a learning experience for the bag of tricks... [In the other direction, greatly overexposed negatives can sometimes be rescued with a solution called "Farmer's reducer", (nothing at all related to vegetables or weight reduction).] These chemical techniques were developed back in the olden-days, before digital.