[Unclenick]

There seen to have been different mixes at different times. Some black (Greenie Stick-um caps), some with aluminum or magnesium dust in it. We used to spend hours stripping whole rolls of it and set it off all at once in a dish. That was when I was 7 or so.

I do recall the residue was pretty corrosive and also that it smelled of phosphorous. Despite a lot of later experimentation with things a lot more powerful than caps, I got through childhood and adolescence with all my fingers and both eyebrows. But I wouldn't ever repeat some of what I did then, today.