Signal restoration tips

[nw-mailing-list at nwhs.org]

Just to make it even more scary, the silica sand used in sandblasting is 
also hazardous to you lung health...the cause of silicosis, a large part 
of what makes coal workers (it's not just miners) get "black lung".  The 
coal makes the lungs black but its the silica rock dust that does much 
of the damage.

Just thought you'd like to know.

Jim McDaniel, American Lung Association of Virginia