Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection; Delay of Effective Date of Conforming Amendments
mine-safety · Mine Safety and Health Administration · Published 2026-04-06 · Effective 2024-04-18 · 91 FR 17143
Document
Document number
2026-06584
Federal Register citation
91 FR 17143
CFR reference
30 CFR 56
Type
Rule
Action
Final rule; delay of effective date.
Category
mine-safety
Sub-agency
Mine Safety and Health Administration
Publication date
2026-04-06
Effective date
2024-04-18
DOL docket
Docket No. MSHA-2023-0001
Abstract
MSHA is issuing this notification following a judicial stay of the compliance deadlines established in the 2024 final rule titled "Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection" (2024 Silica Rule). The 2024 Silica Rule made conforming amendments for metal and nonmetal (MNM) standards that are scheduled to take effect on April 8, 2026. Since a judicial stay is in effect, this notification delays the conforming amendments indefinitely, pending judicial review.