A 3 Classification scheme for coal

The American Society for Testing and Materials (ASTM) classification scheme for coal rank, referred to in places throughout this report, is shown in Figure 12.

Figure 12

Figure 12 Classification of coals by rank

Source: modified after Wood et al. (1983). This figure is not covered by a Creative Commons Attribution licence as it is in the public domain.

Last updated:
5 January 2018