Top 2 alternative sites to vermiculiteinstitute.org
Vermiculite.COM--a guide on how and where to purchase vermiculite in the United States and the world.
A guide on how and wehre to purchase vermiculite in the United States and other parts of the world with links, basic information, and suggestions.
Schundler Company Perlite and Vermiculite Products
Over 170 pages of information about perlite and vermiculite and some of their many uses including Classic 5 LD Fireproofing, Plant Guides, Construction Specifications, basic MSDS sheets, and links to other sites.