Optimum Coal Mine – South Africa
The Optimum Coal Mine, located in South Africa’s rich Highveld coalfields, is one of the better-known coal operations in the Mpumalanga/Ogies region. This article summarizes its location, geological characteristics, the…
Composite coal
This article examines the subject commonly referred to as composite coal — a term that can denote both geological composite samples and engineered blends of different coal types used to…
Naryn Sukhait Coal Mine – Mongolia
The Naryn Sukhait coal deposit, located in the southern reaches of Mongolia near the Chinese border, is one of the country’s better-known coal sites and a significant element of the…
Nacala Corridor Mines – Mozambique
The Nacala Corridor is a major transport and resource-development axis in southeastern Africa that has reshaped Mozambique’s mining landscape. Centered on the rich coal-bearing basin around Moatize in Tete Province…
Mucanha-Vuzi Mine – Mozambique
The following article examines the Mucanha-Vuzi mining area within the broader coal-mining landscape of central Mozambique. It covers location and geology, the types of coal encountered, economic and industrial significance,…
Brown coal briquettes
Brown coal briquettes — a form of compacted lignite — have played a significant role in regional energy systems, industrial processes and household heating for more than a century. This…
Lignite briquettes
Lignite briquettes, a processed form of low-rank coal commonly called lignite or brown coal, play a distinctive role in regional energy systems and small-scale heating applications. This article explores where…
Montelíbano Mine – Colombia
This article examines the mining activity associated with Montelíbano, a municipality in the department of Córdoba, Colombia, focusing on the principal operation in the area, its mineral type, economic and…
Industrial-grade lignite
Industrial-grade lignite, often termed brown coal, is a distinctive type of coal that occupies an important but controversial position in the global energy and industrial landscape. Characterized by relatively low…
Thermal middlings
Thermal middlings are an often-overlooked but important fraction of coal that plays a practical role across mining, coal preparation and power-generation value chains. This article explains what thermal middlings are,…









