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Tending to a below-ground fire is unlike fighting ones above ground.
PDF) The methane-air explosion hazard within coal mine gobs
Burning coal seams pose wildfire risk, The Herald Times
Dangerous legacy: Tens of thousands of Coloradans live near one of the state's many underground coal-mine fires, Subscriber Content
Marshall fire renews focus on underground coal blazes
The Coal Legacy that Led to Colorado's Most Destructive Fire
Grace Hood Colorado Public Radio
CPR News Archives Colorado Public Radio
Deadly Colorado blaze renews focus on underground coal fires - Los Angeles Times
Dangerous legacy: Tens of thousands of Coloradans live near one of the state's many underground coal-mine fires, Subscriber Content
The Coal Legacy that Led to Colorado's Most Destructive Fire
Sleep Now in the Fire: the Year in Climate
Spontaneous combustion of coal seams in the Bengiler coal mine in Turkey
Dangerous legacy: Tens of thousands of Coloradans live near one of the state's many underground coal-mine fires, Subscriber Content
Method for prevention and control of spontaneous combustion of coal seam and its application in mining field - ScienceDirect
Spontaneous combustion in upper coal seam that will not influence