I'll have to check it out. Just from the title, I suspect there might be some good stuff in there. And like you, every time I dig out the brains, I keep thinking I'm gonna get mad cow disease
I (unfortunately) haven't had much luck brain tanning with the hair on, only making buckskin. I always get some hair slippage when trying to use the brains- not all over, just usually a spot about the size of a 50 cent piece. It's weird, because it happens so quickly, within a day or so. I used to think I was just scraping too deep (for buckskin, you can really wail on it, and it won't hurt anything), but I've tried to baby it for the hair on hides, and no luck. Works fine when I use one of the commercial solutions for hair on, just not the brains. I don't get it.