1. U.S. Environmental Protection Agency. 1989. 40 CFR Part 763, Asbestos: Manufacture, Importation, Processing, and Distribution in Commerce Prohibitions.Final Rule. Fed. Reg., Vol. 54 July 12 No. 132
2. U.S. Department of Labor, Occupational Safety and Health Administration. 1988. 29 CFR Part 1926.58: Asbestos, Tremolite, Anthophylite, and Actinolite.Fed. Reg., Vol. 51 June 20 No. 119: Amended in Fed. Reg. Vol. 53, No. 178 (September 14, 1988)