"Steve Barker LT" wrote in message
...

I can't speak for the BX, but the old cloth romex I'm pulling out of my
house appears to have a wrap of asbestos in it. After burning it (to
recycle the copper) in a very hot fire, there is what appears to be a
white ribbon spiraled around the copper. I can only assume it's asbestos
put there for pulling strength.

I'd expect linen not asbestos.