Hard Rock Mine Refuge Chambers The MineARC MineSAFE Permanent Range Permanent refuge solutions for underground safety zones, excavations and break/rest areas.

Helping safeguard miners in over 40 countries, across six continents, the MineARC MineSAFE series is the world’s most trusted refuge chamber in metal (hard rock) and non-metal mines. Emergency refuge forms an integral part of an underground mine’s wider Emergency Response Plan (ERP). Fires, explosions, rock-falls, flooding and the release of smoke and other forms of toxic gas are the types of incidents that occur all too frequently, despite the high levels of planning and the safety precautions in place. In these types of emergencies, when evacuation is no-longer safe or practical, emergency refuge is designed to provide a safe and secure ‘go-to’ area for personnel to gather and await extraction. MineARC Refuges have been successfully used around the world in multiple mine and tunnelling emergencies to save lives. Refuge chambers should be deployed throughout the mine to create a refuge 'network' accessible to all underground personnel whilst on foot. Depending on the country/region, regulations usually state acceptable 'safe distances' between refuge chambers.

Permanent Refuge Safety Solutions A permanent refuge chamber (as opposed to portable) can often prove to be a more efficient and cost effective solution for an underground mine. In particular, mines that; Have a large number of personnel underground at any one time, Have low excavation costs, and Where the regular movement of personnel underground remains within certain areas. Permanent refuge chambers therefore often double as break, rest and lunch areas, capable of sheltering upwards of hundreds of personnel at any one time.

Q Q How do you control the build up of CO & CO2 within the refuge shelter? How do you control the build up of CO & CO2 within the refuge shelter? A A CO/CO2 Scrubbing System MineARC’s unique scrubbing system maintains CO/CO2 Scrubbing System MineARC’s unique scrubbing system maintains CO levels below 25ppm and CO2 levels to less than 1%. CO levels below 25ppm and CO2 levels to less than 1%.

MineARC Scrubbing Systems Standard Scrubbers Carbon dioxide (CO2) and carbon monoxide (CO) are expired by the occupants as part of their normal breathing activity. Carbon monoxide can also enter the main chamber via the compressed air intake (if it becomes compromised), and as occupants enter and/or exit the refuge chamber. CO2 / CO removal is a vital necessity for any refuge chamber, particularly if mine air has failed and/or become compromised. A standard range of scrubbing systems is available to suit all refuge chambers sizes, occupancies and entrapment durations. SERIES IV SCRUBBER Standard Scrubbers Series IV Scrubber Control unit of an expandable scrubbing network. Features remote monitoring, air conditioning, i.V.A.N, self-test function, 4-20mA current monitoring. ELV Scrubber Standalone system for medium scale environments. Features low voltage power, remote network monitoring and minimum 36hr UPS run time. Drone Scrubbers For use in conjunction with the Series IV Scrubber. 150 cfm or 300 cfm options available.

MineARC Series IV Scrubber AIR CONDITIONING SYSTEM MARCISORB CO2 & CO CHEMICAL CARTRIDGES MOTION SENSOR AND USE PORT CIRCUIT BREAKER AIR CON REMOTE DOCKING STATION BATTERY UPS ISOLATION SWITCH SERIES IV DIGITAL CONTROLLER INTERFACE DIGITAL GAS MONITOR DOCKING STATION SCRUBBER FLOW AIR VENT STORAGE COMPARTMENT

Q How do you prevent the shelter from becoming too hot and humid to support life? A Cooling and Dehumidifying A cooling system with minimum capacity of 130 watts/person is recommended to mitigate the heat load.

Air Conditioning Systems MineARC Air Conditioning Systems Air conditioning is vital to combat the potentially fatal effects of heat stress inside an occupied refuge chamber. A continuous build up of heat is caused by the occupant’s own metabolic activity, scrubbing processes, electrical equipment, and any ambient (external) heat affecting the refuge chamber’s internal temperature. All MineSAFE Chambers include quality reverse cycle split-system Mitsubishi Air Conditioners to both cool and dehumidify the refuge chamber. The evaporator unit is located inside the refuge chamber, and can be mounted to the Series IV Scrubbing System or remotely. Meanwhile the condenser fan is positioned outside the refuge chamber, mounted on top of the battery backup UPS or remotely. AIR CONDITIONER Standard Air Conditioning Units Mitsubishi Air Conditioning systems are rated from 2.5kW to 8kW capacities depending on the cooling capacity required. For large occupancy permanent shelters, multiple units are used simultaneously (calculations performed by MineARC engineers).

Q How do you ensure that critical systems continue to operate if mains power fails? A UPS Battery Back Up System MineARC recommends a UPS battery back up system in case mains power is disrupted.

MineARC Battery Back Up Standard Battery Boxes A secure steel cabinet outside the main refuge chamber houses the refuge chamber’s battery backup UPS (Uninterrupted Power Supply). The UPS is a fail safe system that can power the refuge chamber’s internal life support systems for a minimum of 36 hours should mains 'mine' power become cut-off. MineARC has a standard range of battery boxes to suit all refuge chamber sizes, occupancies and entrapment durations. Battery boxes can also be remotely located up to 100m (300ft) from the actual refuge chamber. Custom dimensions units are also available. BATTERY BACK UP Standard Battery Boxes 12 Battery Box 16 Battery Box 20 Battery Box 24 Battery Box 36 Battery Box 44 Battery Box 56 Battery Box

Q A What if the primary breathable air source becomes compromised? Secondary Oxygen Supply MineARC suggests breathing grade O2 cylinders as a secondary Oxygen supply.

Secondary Oxygen Supply MineARC Secondary Oxygen Supply If mine air supply fails, refuge chambers should be fitted with a reliable secondary source of oxygen supply (O2). MineARC Scrubbers operate in conjunction with breathing grade O2 cylinders. To safely and securely house the O2 cylinders, MineARC manufactures two standard configuration cylinder racks. MineARC’s oxygen candle is a third source of oxygen supply should compressed air and compressed oxygen cylinders fail and/or become exhausted. The oxygen candle is approved for military use on submarines around the world, and provides 2,600L (92ft3) of pure oxygen upon ignition. Standard Components 10 CYLINDER CAPACITY RACK Cylinder Rack 6 Cylinder Capacity Cylinder Rack 10 Cylinder Capacity Oxygen Candle

Q How do you ensure the shelter is adequately sealed from the outside environment? A Vent Doors and Airlocks MineARC vent doors and airlocks are installed to ensure no gases are transferred into the shelter.

Single, Right Hinge Bulkhead Door Single, Left Hinge Bulkhead Door MineARC Bulkhead Doors MineARC manufactures a range of bulkhead doors to suit project specifications. All doors are constructed from solid steel plate, with double-locking rotating handles, rubber seals, portal windows, and check valves to ensure a fully sealed environment. Doors can be configured either with a bulkhead mounting frame (allowing walls to be built around the door), or without a mounting frame, should a door cavity already exist. BULKHEAD DOOR Standard Bulkhead Doors Single, Right Hinge Bulkhead Door Single, Left Hinge Bulkhead Door Double Bulkhead Door Custom Bulkhead Door

MineARC Flushing Airlocks Standard Flushing Airlocks An airlock is designed to act as a secure staging area between the safety of the refuge chamber and the outside environment. The flushing process significantly reduces the threat of contaminants being brought into the refuge chamber on entry. MineARC offers a fully inclusive airlock or alternatively flushing racks for inclusion in pre-existing airlocks. Both systems provide high speed flushing and are activated via a simple pneumatic push-button system. The fully-flushing airlock can optionally use compressed ‘mine’ air as the primary source of air for flushing. If mine air is lost or becomes contaminated, high pressure compressed air cylinders provide a backup supply for flushing. Standard Flushing Airlocks Permanent Airlock Permanent Airlock with Flushing Rack Custom Permanent Airlock Flushing Racks 6 & 10 Cylinder Capacity

MineARC Flushing Airlock STROBE LIGHTING & SIREN MINE AIR FILTER PACK ENTRY/AIRLOCK DOOR PORTAL WINDOW REFLECTIVE SIGNAGE FULLY FLUSHING AIRLOCK UPS BATTERY BACK UP

Q A How do you avoid the risk of compressed airline contamination? Compressed Air Management System MineARC recommends adequate four-phase filtration for air entering the refuge chamber.

MineARC CAMS The MineARC Compressed Air Management System (CAMS) is an improved, dedicated air management unit designed specifically for MineSAFE Permanent Refuge Rooms and Portable Chambers. Easier installation and faster service time. Flood protection valve for automatic mine air shut off in the event of water ingress. Air quality monitoring and shut off valve. Optimisation of mine air usage, resulting in considerably reduced operational costs. Security against over pressurisation. COMPRESSED AIR MANAGEMENT SYSTEM The new CAMS has an air pressure sensor and a shut off valve allowing it to regulate air flow into the chamber, automatically emitting periodic ‘bursts’ of compressed air into the refuge chamber when the pressure inside drops below 200Pa. This process optimises efficiency of mine air services and guarantees against over-pressurisation of the refuge chamber. Over a 12 month period this can equate to significant financial savings.

MineARC CAMS AIR TOXICITY MONITOR CAMS MANIFOLD SNAP-&-CLIP FOUR-PHASE FILTRATING: Water separation 5 Micron Pre-Filter 0.01 Micron Coalescing Filter 0.01 Micron Absorbent Filter FLOOD PROTECTION

Additional Componentry First Aid Kits Digital Gas Monitor Portal Windows Fixed Gas Monitor Pressure Relief Valves Bench Seats Storage Cabinets Carbon Monoxide Safety-Off System Food and Water Automated Oxygen Delivery System Sanitation