Just came across a can (yes-a metal can of W 231) that I had purchased 8-15-1984. It was in a box of reloading stuff I had lost track of in my attic. I was talking gun talk with a vendor whose opinion I really respect but when he told me to just dump it in the garden for the nitrogen, I looked for the ingredients list but no cigar there. I wanted to ask you guys for your experience with disposing these materials.