Adam David Long

MSHA Proposes 18-Rule Package Reaffirming Underground DPM Limits and Curtailing District Manager Authority (July 1, 2025)

mining

MSHA Proposes 18-Rule Package Reaffirming Underground DPM Limits and Curtailing District Manager Authority (July 1, 2025)

Executive Summary MSHA proposed 18 rules on July 1, 2025, including reaffirmed diesel particulate matter (DPM) limits split by mine type and restrictions on district managers’ authority over plans and training programs. These proposals matter because they segment obligations by underground status and commodity and may reduce plan variability across

By Adam David Long