Crushed coal
Crushed coal is a widely used form of fossil fuel obtained by mechanically reducing the size of mined coal to meet the requirements of various industrial processes. This article examines…
Run-of-mine coal (ROM coal)
Run-of-mine coal (commonly abbreviated as ROM coal) is the raw material produced directly from a mine before any processing, washing or blending. It represents the first form of coal as…
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Power-station coal
This article examines the coal used in large-scale electricity generation — commonly called power-station or thermal coal — its geological occurrence, mining and processing, economic and trade dynamics, role in…
Heating coal
Heating coal plays a continuing and complex role in the modern energy system. This article explores the geological occurrence, mining and processing, global production and trade, economic importance, industrial uses,…
Steam-raising coal
Steam-raising coal, often referred to as steam coal or thermal coal, is the class of coal primarily used to generate steam for electricity production and industrial heat. This article examines…
Gas coal
This article explores the nature, distribution, economic importance and industrial uses of gas coal — a form of coal with distinctive physical and chemical properties that make it valuable for…
Non-coking coal
Non-coking coal, often referred to as thermal or steam coal, is one of the most widely used fossil fuels in the world. Unlike coking coal, which is suitable for metallurgical…
Puerto Libertador Mine – Colombia
The following article provides a comprehensive overview of the Puerto Libertador coal mining area in Colombia. It covers the mine’s location and geology, the types of coal extracted, mining methods…
H-grade coal
This article examines H-grade coal — a term often used in industry to denote higher-quality coal with significant heat output and specific properties that make it valuable for energy and…
G-grade coal
This article examines the properties, distribution, economic role and industrial significance of a category frequently referred to as G-grade coal. The term can have several meanings depending on national standards…
