Environmental

In New Mexico, a property built before 1980 may contain insulation made of vermiculite ore contaminated with:

ALead
BAsbestos (from the Libby, Montana mine that supplied much of U.S. vermiculite)✓ Correct
CRadon
DMercury

Explanation

Much of the vermiculite insulation (sold as Zonolite) used in U.S. homes before 1990 came from the W.R. Grace mine in Libby, Montana, which was contaminated with naturally occurring asbestos. Properties with this product in their attics should be tested.

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