• June 28, 2026
Non-caking coal

Non-caking coal is a broad category of coals that do not soften, plasticize or fuse into a coherent, porous mass (coke) when heated in the absence of air. It is…

  • May 19, 2026
Coal middlings

This article examines the phenomenon commonly called coal middlings — the intermediate-sized, intermediate-quality fractions produced during coal mining and preparation. Coal middlings occupy a complex place between high-grade clean coal…

  • December 25, 2025
Zibulo Coal Mine – South Africa

The Zibulo Coal Mine is one of the notable mining operations within South Africa’s extensive coal-producing region. Located in the high-density coalfields of Mpumalanga, Zibulo plays a role in both…