AASHTO Sets Limits for Heavy Metals in Glass-Bead Road Markings
The American Association of State Highway and Transportation Officials recommends member states adopt maximum allowable limits of 200 ppm for arsenic, 200 ppm for lead, and 200 ppm for antimony in glass beads for highway markings. Twenty-four states already have limits consistent with this recommendation. (More at ForConstructionPros.com . . . )
OSHA Releases Free Mobile App to Monitor Heat Index
As part of continuing
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