Mine Safety and Health Administration, Department of Labor
MSHA
Part of Department of Labor
Content Hash:
0055296bacd7c13cf5605c681a3eb026
MD5 checksum of all regulatory content as of Oct 15, 2025
Regulatory Word Count Over Time
Total words across all chapters managed by this agency
Earliest:
359,378 words
(Jan 01, 2017)
Latest:
3,237,826 words
(Oct 15, 2025)
Change:
+2,878,448
(801.0%)
CFR Chapters
Title 30, Chapter I
CHAPTER I - MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR