• August 5, 2026
Coal dust

The following article explores the subject of coal and coal dust from geological occurrence to industrial applications, economic significance, and health and environmental implications. Coal remains one of the world’s…

  • August 1, 2026
Primary coal

This article examines coal in its many dimensions: geological origin, global distribution, methods of extraction, economic importance, statistical trends, industrial applications and the environmental and policy debates surrounding it. Coal…

  • April 19, 2026
Coal for direct-reduced iron

The following article examines the role of coal specifically used in the production of direct-reduced iron (DRI). It explores the technical characteristics of this coal, the main mining regions, economic…

  • December 31, 2025
Smokeless coal

Smokeless coal is a category of coal and coal-derived fuels valued for their low visible smoke output when burned, making them desirable for domestic heating and certain industrial processes where…

  • December 6, 2025
Lean coal

This article explores the technical, economic and geopolitical dimensions of what is commonly referred to as “lean coal” — lower-energy, lower-volatile types of coal often used for power generation rather…

  • November 30, 2025
Sub-bituminous coal

Sub-bituminous coal is an intermediate rank of coal that bridges the gap between lignite and bituminous coal. It plays a crucial role in modern energy systems, particularly in power generation,…