Cleated coal
Cleated coal is not a separate type of fuel but a descriptive term used by geologists and mining engineers to refer to coal seams that contain a well-developed system of…
Fractured coal
The term fractured coal refers to coal seams that contain pervasive natural cracks, joints and cleats which greatly influence their mechanical behavior, permeability and economic value. Fracturing may be the…
Raw anthracite
Raw anthracite is one of the highest-ranking coals in terms of carbon content and energy density. It has been valued for centuries for its distinctive physical and chemical properties, and…
Raw bituminous coal
Raw bituminous coal is one of the most important fossil fuels in the modern economy. It occupies an intermediate rank in the coalification process between subbituminous coal and anthracite, offering…
Abinsky Coal Mine – Russia
The Abinsky Coal Mine occupies a notable place among Russia’s many mining sites, combining regional economic importance with the technical and environmental challenges typical of modern coal operations. Located within…
Zofiówka Coal Mine – Poland
Zofiówka Coal Mine is one of the better-known underground hard coal mines in Poland, situated in the heart of the Upper Silesian Coal Basin. This article presents a comprehensive overview…
Zhungeer Coal Mine – China
The Zhungeer (also spelled Zhunge’er or Junggar) coal areas are among the most important coal-bearing regions in northwestern China. Located within the broad expanse of the Junggar Basin and adjacent…
Zasiadko Mine – Ukraine
The Zasiadko (also spelled Zasyadko) coal mine is one of the most well-known and controversial mining operations in Ukraine’s Donbas basin. Located in the industrial heartland of Donetsk Oblast, the…
Yunyagan Mine – Russia
The following article provides a comprehensive overview of the Yunyagan Mine in Russia, covering its location, geology, the type of coal extracted, economic and industrial relevance, operational aspects, and environmental…









