- January 6, 2026
Chemical-grade coal
This article examines the specialised category commonly called chemical-grade coal — varieties of coal selected or processed for use as a raw material in chemical, metallurgical and high-value industrial applications.…
- December 15, 2025
Supercritical coal grade
This article examines the concept commonly referred to as supercritical coal grade and, more broadly, the relationship between coal quality and the technologies known as supercritical and ultra-supercritical power plants.…
- December 11, 2025
Dhanbad Jharia Coalfield – India
The Dhanbad–Jharia coal mining area is one of the most historically important and industrially significant mining regions in India. Located in the heart of the state of Jharkhand, this coalfield…
- December 3, 2025
Heidaigou Coal Mine – China
The Heidaigou Coal Mine is one of the many important coal-producing operations in northern China. Located within the coal-rich northern provinces, it has played a significant role in supplying coal…



