CoalSAFE International High Seam Refuge Chamber

The CoalSAFE International High Seam (IHS) Refuge Chamber has been designed in consultation with the world's leading coal mining companies and regional mining authorities to best suit the underground coal mining environment. Refined over a number of years, the CoalSAFE IHS Refuge Chamber's intrinsically safe (IS) design provides coal mining personnel with optimum safety features, functionality and performance.


The CoalSAFE International High Seam Refuge Chamber features an innovative, intrinsically safe life-support system that is unique to MineARC Systems; providing both powerless CO/CO2 scrubbing and airconditioning. Utilising a sequential operating procedure, the intrinsically safe system can be activated in less than 60 seconds during a coal mining emergency.

The CoalSAFE International High Seam Refuge Chamber can be custom designed to client specifications, but typically features 12, 16 and 20 person configurations. Special transport configurations include narrow builds specifically tailored for shaft mines or modular builds, allowing a complete refuge chamber to be split into smaller sections before being transported and then reassembled underground.

  • Intrinsically Safe Design
  • Blast Rating: 5psi
  • CO & CO2 Scrubbing
  • Breathable Air (O2) Supply
  • Fully Flushing, Internal Airlock
  • Air Conditioning
  • 48hrs Standalone Operation with Option to Upgrade
  • Viewing Porthole
  • Gas Monitoring
  • In-built Cylinder Storage
  • Cyalume Light Sticks
  • Special Dimensions and Configurations
  • Duration Upgrade
  • Blast Shield Protection
  • Blast Rating Upgrade
  • Thermal Insulation
  • Compressed Air Filtration System
  • Intrinsically Safe Strobe Light
  • Wheel and Tow Package
  • Reinforced Attachment Points

Chamber Exterior – Front

The ‘face’ of the CoalSAFE International High Seam Refuge Chamber is designed primarily for easy identification and quick access during a coal mining emergency. The reflective signage alerts passers-by to the refuge chamber’s location, whilst the interlocking rotating door handles provide simple, straight forward access to the safety of the interior airlock.
The CoalSAFE has been engineered to ensure ease of transport and robust design. Constructed from explosion resistant steel plate with external support wraps and surround package as standard, the refuge can withstand in excess of 5psi overpressure with no permanent damage. Push points, forklift slots and towing and lifting eyes are provided top and bottom on front and rear.

A major feature of the CoalSAFE International High Seam Refuge Chamber is a fully pressurised internal airlock, designed to act as a secure staging area between the hazardous outside environment and the enclosed protection of the refuge chamber. The airlock features a pneumatic flushing system that ensures the outflow of air; preventing the ingress of contaminants while the door is open for entry.

Integrated into the main shell of the CoalSAFE Refuge Chamber, the internal airlock provides a seamless entry way into the main chamber, while retaining portability of the unit as a whole. This also ensures coherent structural integrity and protection across the refuge chamber. MineARC offers a range of airlock options and custom features, dependent on site specifications and requirements.

Chamber Interior

Inside the MineARC CoalSAFE International High Seam Refuge Chamber, a number of vital systems combine to create a safe, ongoing environment for occupants.

The MARCis intrinsically safe Carbon Dioxide (CO2) and Carbon Monoxide (CO) Scrubbing System does not require any electrical power to operate. The active chemical scrubbing system is designed to clean the air of these harmful gases and toxins that build up over time within a sealed, occupied environment. In addition, the MARCis incorporates a non-electrical air conditioning system that both cools and dehumidifies the refuge chamber.

Chamber Exterior – Rear

Comparison Table

48hr Duration 96hr Duration 5psi Blast Resistance 15psi Blast Resistance Low Seam Construction High Seam Construction

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