CLANAE 05—Coal and lignite extraction

Where 05 sits

1. B Mining and quarrying
2. 05 Coal and lignite extraction

Contains 2 narrower codes

• 05.1 Coal extraction and agglomeration
• 05.2 Lignite extraction and agglomeration

What 05 includes

• Coal is formed by the gradual decomposition of buried plants subjected to pressure and varying temperatures. As a result, the plant tissue gradually transforms into coal through several stages:
• Peat (60% carbon), lignite (70% carbon), bituminous coal (78% carbon), semi-bituminous coal or coal (83% carbon), and anthracite (90% carbon, the hardest type of coal).
• These elements are found in layers ranging in thickness from a few centimeters to several meters; hence, there are open-pit and underground mines. This classification includes all the activities carried out at the deposit, such as cleaning, screening, classification, pulverizing, and in-situ gas production from the coal, among others.
• Anthracite: coal with a volatile matter content of less than 14%.
• Bituminous Coal: coal with a volatile matter content greater than 14%.

05 in other systems