"Jim Wilkins" fired this volley in news:mv8esf$f5i$1
@dont-email.me:

Maybe the soil contained some rust inhibitor that came from the scrap.
Were other cut ends rusty?

Everything in the yard but this one piece and a piece of 300-series were
rusted all to hell. And my cut-ends that were not abused with the nitrate
have still not shown a trace of corrosion.

LLoyd