MSHA Not Likely to Weaken Respirable Dust Rule

February 12, 2018​

David Zatezalo, MSHA’s Assistant Secretary for Mine Safety and Health, recently told Members of Congress at a hearing on MSHA’s policies and priorities that he had no plans to roll back MSHA’s respirable dust rule, despite a prior indication by the Administration that it may do so. During the hearing, some Members of Congress noted that MSHA’s exposure limit for silica is twice as high as OSHA’s and stated that they may introduce legislation to lower MSHA’s limit to match OSHA. Mr. Zatezalo said that his agency is awaiting the results of a study being conducted by the National Academies of Science on this matter.​​