• June 9, 2026
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…

  • December 10, 2025
Ultra-low-sulfur coal

Ultra-low-sulfur coal has become an increasingly important commodity in global energy and industrial markets. Characterized by very low sulfur content compared with conventional coals, this product meets stricter emissions requirements,…