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  • To evaluate the reliability of Self-Contained Self-Rescuers (SCSRs) deployed in US underground coal mines. This is an ongoing project that provides performance data on Field Deployed SCSRs


Escape Training using Self-Contained-Self-Rescuers in an underground coal mine

Applicable Standards

  • Activities mandated by 30 CFR 75.1714.14 et seq

Key Partners

  • USA and International Respirator Manufacturers
  • MSHA
  • UMWA
  • UCOA


  • BCOA
  • NMA
  • UMWA
  • USWA
  • SCSR Manufacturers

Project Scope

  • Collect a statistically significant sample of SCSR devices
  • Test SCSRs collected on ABMS testing equipment
  • Report results to mine operators, MSHA and Manufacturers
  • Liaison with stakeholders on testing issues


  • Improved sampling methodology for the LTFE
  • Improved LTFE sample handling and recording
  • Indentified problem with inspection of field deployed units
  • Identified problems with inspection criteria in user instructions
  • Identified potential problem with low O2
  • 2 New SCSR developed and approved
  • Correlation testing scheduled for CCER baselines


  • Draft LTR1 report is in review process as of 3/20/2012
  • 3 CPIP have been opened. One model has been removed from production and an improved model submitted for approval in its place
  • A major investigation of the reliability of one model of SCSR is currently underway. This is an comprehensive evaluation of the mine workers risk of using that device
  • MSHA and NIOSH have modified their position on manually starting dry chemical bed O2 devices


  • Validation that equipment is performing as certified
  • Corrective actions by manufacturers to address reported problems
  • NPPTL, PRL, and MSHA developed new O2 protocol
Page last updated: April 17, 2012
Page last reviewed: April 17, 2012
Content Source: National Institute for Occupational Safety and Health (NIOSH)
National Personal Protective Technology Laboratory