CMSX4/CMSX5 rhenium alloy pigtails in MIT lab

~20 pigtails discovered during a lab cleanout, each containing ~$1000 of platinum-group metal. Tom collected two and instructed others not to scrap them. They typically get recycled.

Until — around 1995, 2000, we started putting in CMSX-4, which is like three percent rhenium, and CMSX-5, which is like six percent rhenium. Remember those little pigtails that I passed around? Dr. Belmer talked about — I said I wanted those back. They're about six percent rhenium. There's about a pound, and about six percent of that is platinum-group metal. Those are about two thousand dollars apiece. We found about twenty of them down in the lab when we were cleaning it out. I collected two. I told everybody else not to throw them out. They've got about a thousand dollars apiece worth of platinum-group metal in each of them. They typically recycle them.