In the ongoing process (about 2 weeks thus far) of unpacking after a recent move, I came across four rolls of unshot KR64, vintage early 1990s(?). I realize that it can be processed, with some difficulty, as a black and white negative. So... what are my options? I have no idea as to the film's storage conditions - I found it mixed in with my office supplies. Any recommendations re ISO? I really would like to shoot and process the film for high contrast images - architectural abstracts, possibly. Is this possible? The effect I would like to try for is sort of one of minimum tones: little middle tones, just pure black and white. Any suggestions?