• January 2, 2026
Low-rank coal

Low-rank coals — commonly referred to as lignite and sub-bituminous coals — occupy an important but often misunderstood position in the global energy mix. Characterized by high moisture content, relatively…

  • December 11, 2025
Low-moisture coal

Low-moisture coal occupies a particular niche in the global coal complex: it is valued for its higher energy density, better handling characteristics and improved performance in many industrial processes compared…

  • December 7, 2025
Liugou Coal Mine – China

This article provides a comprehensive profile of the Liugou Coal Mine in China, combining available contextual information about Chinese coal mining with what is known or reasonably inferred about mines…

  • November 24, 2025
Semi-anthracite

Semi-anthracite is a distinct rank of coal that occupies a middle ground between high-grade anthracite and the more common bituminous coals. It combines many of the advantageous physical and chemical…