Rule lifecycle · RIN:1219-AC05
Improving and Eliminating Regulations; Diesel Particulate Matter Emission Limits in Underground Coal Mines
Department of Labor, Mine Safety and Health Administration — observed across 2 documents over 359 days. Use the source documents below before deciding whether this affects your business.
In plain English
The Labor Department updates rules on diesel soot from underground coal mining equipment, effective July 27, 2026. Coal mine operators should review these new standards now and determine whether their current equipment and ventilation systems will comply by the July deadline.
First seen
Jul 1, 2025
Last seen
Jun 25, 2026
Latest stage
Rule
PRORULE → RULE
359d
Effective on
Monday, July 27, 2026
Stage timeline
Proposed·Jul 1, 2025
Improving and Eliminating Regulations; Diesel Particulate Matter Emission Limits in Underground Coal Mines
#2025-11647
Final·Jun 25, 2026·91 FR 38280
Improving and Eliminating Regulations; Diesel Particulate Matter Emission Limits in Underground Coal Mines
effective Jul 27, 2026#2026-12792