Underground Coal Seams Can Spontaneously Combust And Burn For Decades. Here's How Officials Keep Colorado's 38 Fires Under Control

Tending to a below-ground fire is unlike fighting ones above ground.

Colorado to dig up long-burning coal fire near Marshall fire

Underground Coal Fires – Emerging as a global threat with significant economic, social and ecological impacts

A Look Inside Colorado's Expensive And Stinky Underground Coal Mine Fire Problem

Dangerous legacy: Tens of thousands of Coloradans live near one of the state's many underground coal-mine fires, Subscriber Content

Underground Colorado fire has been burning for a year

Deadly Colorado blaze renews focus on underground coal fires

CPR News Archives Colorado Public Radio

Coal Seam Fires Burn Beneath Communities in Zimbabwe - Eos

In Retrospect: Underground fires are part of Marshall's coal mining past

Coal underground may have been burning for 150 years near where the Marshall Fire started northwest of Denver - Wildfire Today

Method for prevention and control of spontaneous combustion of coal seam and its application in mining field - ScienceDirect

Coal Seam Fire memories still burning a decade later

Underground Coal Fires – Emerging as a global threat with significant economic, social and ecological impacts

The hot, toxic, uphill battle against Colorado's underground fires, News

Deadly Colorado blaze renews focus on underground coal fires