Terms used in official statistics

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Hard coal


The term 'hard coal' refers to coal of gross calorific value greater than 23 865 kJ/kg (5 700 kcal/kg) on an ashfree but moist basis and with a mean random reflectance of vitrinite of at least 0,6. Hard coal comprises together: anthracite, coking coal and other bituminous coal.

  • Regulation (EC) No 1099/2008 of the European Parliament and of the Council of 22 October 2008 on energy statistics
    Place of publication: (Dz. Urz. UE L 304 z 14.11.2008, str. 1, z późn. zm.)

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Urząd Statystyczny w Rzeszowie