30 C.F.R. § 47.55Download PDFCurrent through May 31, 2024Section 47.55 - Retaining an MSDSThe operator must-(a) Retain its MSDS for as long as the hazardous chemical is known to be at the mine, and(b) Notify miners at least 3 months before disposing of the MSDS. 30 C.F.R. § 47.55