Brown Coal
European Commission - Eurostat

International Energy Agency (IEA)
Non-agglomerating coal with a gross calorific value less than 17 435 kJ/kg (4 165 kcal/kg) and greater than 31% volatile matter on a dry mineral matter free basis.

Oil shale and tar sands produced and combusted directly should be reported in this category. Oil shale and tar sands used as inputs for other transformation processes should also be reported in this category. This includes the portion of the oil shale or tar sands consumed in the transformation process.

Shale oil and other products derived from liquefaction should be reported under oil..

United Nations Economic Commission for Europe (UNECE)
Non-agglomerating coal with a gross calorific value less than 17 435 kJ/kg (4 165 kcal/kg) and greater than 31% volatile matter on a dry mineral matter free basis.

Oil shale and tar sands produced and combusted directly should be reported in this category. Oil shale and tar sands used as inputs for other transformation processes should also be reported in this category. This includes the portion of the oil shale or tar sands consumed in the transformation process.

Shale oil and other products derived from liquefaction should be reported under oil.

UNSD Energy Statistics Section
Coal with a low degree of coalification which retained the anatomical structure of the vegetable matter from which is was formed. It has a mean random reflectance of vitrinite of less than 0.6, provided that the gross calorific value (on a moist ash-free basis) is less than 23,856 KJ/kg (5,700 kcal/kg).