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Table 3 Unused extraction factors of selected countries for hard coal extraction, taken from [34]

From: From cumulated energy demand to cumulated raw material demand: the material footprint as a sum parameter in life cycle assessment

Country (as given in Ecoinvent)

Unused extraction factor for hard coal (kg/kg)

Australia

17.6

China

0.75

Colombia

11.99

Germany

0.95

India

5.3

Russian Federation

7.3

South Africa

7.56

USA

5.5

World average

4.28