{
  "node_id": "us-msha-30-cfr-part-57-underground-mine-safety",
  "title": "US MSHA 30 CFR Part 57 - Safety and Health Standards for Underground Metal and Nonmetal Mines",
  "domain": "Mining & Natural Resources",
  "version": "1.0.0",
  "last_updated": "2024-01-01",
  "bluf": "MSHA 30 CFR Part 57 establishes federal safety and health standards for underground metal and nonmetal mines including gold, silver, copper, zinc, and potash operations, mandating refuge chambers or equivalent escape routes, diesel engine emission controls (DPM 160 ug/m3 TC), ventilation minimum 200 CFM per brake horsepower for diesel equipment, silica PEL of 0.05 mg/m3, and mandatory self-contained self-rescuers (SCSR) for all underground workers.",
  "paywall": {
    "status": "LOCKED",
    "unlock_cost_usd": "0.01",
    "skyfire_id": "41779894-ece2-4163-9761-b3b1b76e19b0"
  },
  "crosswalks": {
    "_available_keys": [
      "industry_mapping",
      "related_frameworks",
      "eu_ai_act_article",
      "primary_regulatory_body",
      "compliance_tier"
    ],
    "_note": "Full crosswalk values included in vault response"
  },
  "dependencies": [
    "us-msha-30-cfr-part-56-surface-mine-safety",
    "extractive-industries-transparency-eiti-standard",
    "gri-14-mining-sector-standard-2022",
    "icmm-mining-principles-2020"
  ],
  "primary_citations_count": 7
}