MineARC® Systems has signaled its arrival onto the US coal scene with the first major sales of its patented CoalSAFE™ refuge model to major mine operators in the southern state of Alabama. The CoalSAFE™ refuge features the patented MARC.is™ unit – the world’s first intrinsically safe refuge cooling system.

A total of 38 CoalSAFE™ units have been ordered by major operators including Jim Walter Resources Inc. and Drummond Company Inc., in deals totaling US$6.6 million. Jim Walter had switched their refuge orders from rival manufacturer, Strata Worldwide, to CoalSAFE™ units after noting Strata Fresh Air Bay units provided no cooling to occupants.

Importance of cooling

Under MSHA’s revised 2009 ‘Final Rule’ (Refuge Alternatives in Underground Coal Mines), manufacturers must either provide artificial cooling in their refuges, or at the very least, clearly state the ambient mine temperature(s) at which a safe internal environment for occupants can be maintained (no higher than 95 degrees Fahrenheit Apparent Temperature). Rising above these levels, refuges can effectively become hazards in themselves - with temperatures rising to potentially fatal levels in just a matter of hours.

In Alabama, ambient mine temperatures are typically around 85°F. In these conditions, refuges without internal cooling are considered dangerous. MineARC® CoalSAFE™ refuges have been independently tested to maintain internal temperature below 95°F apparent temperature at ambient temperatures of up to 85°F.

MineARC® Systems encourages all US underground coal operations to evaluate their refuge systems -particularly in regards to ambient temperature and cooling. For further info and advice, contact MineARC® Systems on +1 (214) 337 5100 or email info@minearc.com