[ RadSafe ] Uranium grinding wheels

[neildm at id.doe.gov]

There is an HSS bulletin out about grinding wheels containing uranium
potentially causing surface contamination and/or airborne particles.

I had never heard of this, nor can I find any reference to uranium
containing abrasives on the internet.  Undoubtedly, it is present as a
trace material, but this would not seem to me to be of any concern at
all.

Does anyone have better information? 

Thank you,
Dave Neil