{"data":{"chapter":"I","heading":"Respirable dust standards.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-70/subpart-B/section-70.100","part":"70","subchapter":"O","subpart":"B","id":"70.100","citation":"30 CFR 70.100","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 70—MANDATORY HEALTH STANDARDS—UNDERGROUND COAL MINES","subpartHeading":"","text":null},"meta":{"representation":"json","fullCorpus":"/data/title30-sections.json","snapshot":{"chapterCount":6,"featuredSectionCount":100,"latestAmendedOn":"2026-08-14","latestIssueDate":"2026-08-14","partCount":206,"sectionCount":5954,"upToDateAsOf":"2026-08-19"}}}