- 1. RE: Blasting Sand (long, off-topic, pt 1) (score: 1)
- Author: "Randall" <tr3driver@comcast.net>
- Date: Sun, 1 Aug 2004 08:52:42 -0700
- Right, but the distinction between those categories is size. Respirable particles are less than 0.2 microns in size. No, the respirable fraction ratio is about percentage of the sample falls in the
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