StacksVerified U.S. regulatory reference

30 CFR §47.55

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The operator must—
  1. (a)Retain its MSDS for as long as the hazardous chemical is known to be at the mine, and
  2. (b)Notify miners at least 3 months before disposing of the MSDS.