Bartamos.. thanks for inserting safety into these conversations.
Sometimes we get so focused on how to complete a short term goal we forget about the long term consequences. Having folks looking out for us, like you, is a big help.
Regardless of what we are using there are MSDS sheets available that clearly identify safety issues. If we could all look for those with the same vigor and enthusiasm that we research topics here it would ensure our own longevity.
I switched away from silica sand due to the health risks and now use "nickel slag", it still has risks, just not as bad as silica sand. That's discussed here, a previous media blasting Stovebolt thread:
https://www.stovebolt.com/ubbthread...p;Words=media&Search=true#Post991886