Preventing Massive Pillar Collapses in Coal Mines
Withdrawn Jun 2025
1997
DHHS (NIOSH) Publication Number 97-122
List of Revisions
Revision Date | Revisions | Citation of Revision |
1997 (Original) | ||
June, 2025 | Withdrawn – content part of proceedings https://www.cdc.gov/niosh/docs/mining/works/coversheet680.html |
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