Adam David Long

MSHA Proposes 18 Rules Reaffirming Underground MNM DPM Limit and Curtailing District Manager Authority in July 2025

mining

MSHA Proposes 18 Rules Reaffirming Underground MNM DPM Limit and Curtailing District Manager Authority in July 2025

MSHA issued 18 proposed rules that segment diesel particulate requirements by mine type and would limit district manager authority over training and certain plans. These proposals matter for audit planning across mixed surface and underground portfolios, but final text, effective dates, and transition mechanics remain uncertain. Background On July 1,

By Adam David Long