Reworked coal
This article examines the geological, economic and industrial aspects of reworked coal — an intriguing category of coal that has been transported, eroded, oxidized or otherwise altered after initial formation.…
Xiaobaodang Mine – China
The Xiaobaodang Mine, referenced in various Chinese coal mining site summaries, represents one of the many mining operations that contribute to China’s vast and complex coal industry. This article compiles…
The Evolution of Coal Worker Safety Equipment
The global significance of coal extends far beyond its role as a conventional fuel. From powering steam engines in the 19th century to influencing modern stock market dynamics, this fossil…
Wulanmulun Coal Mine – China
The Wulanmulun Coal Mine, located in the northern regions of the People’s Republic of China, represents one of many important coal extraction sites that feed the country’s vast energy and…
Secondary coal
This article explores the phenomenon commonly referred to as secondary coal, examining what the term means in different contexts, where such coal occurs, how it is recovered or mined, and…
Wolverine Mine – Canada
The Wolverine Mine is a coal mining site in Canada that exemplifies many of the geological, economic and social features common to modern Canadian coal operations. This article provides a…
The Environmental Legacy of 19th-Century Coal Mining
The saga of coal stretches back millions of years, yet its pivotal role in the 19th century reshaped landscapes, societies, and the very fabric of industrial progress. As the world…
Witbank Coalfield Mines – South Africa
The Witbank Coalfield, located in the Mpumalanga province of South Africa, is one of the country’s most important and productive coal mining areas. Often referred to by its modern municipal…
Geologically immature coal
This article examines the nature, distribution, extraction, economic role and industrial importance of geologically immature coal, commonly referred to as lignite or brown coal. Often overlooked in global energy debates…









