Coal mining

https://www.wikidata.org/wiki/Q12880211

Field Hierarchy

Parent
Chemistry 28.9M papers	Engineering 25M papers	Geography 13.2M papers	Organic chemistry 12.9M papers
History 8M papers	Archaeology 6.9M papers	Waste management 1.6M papers	Coal 287k papers
Current
Coal mining 93.7k papers
Child
Coalbed methane 7,322 papers	Groundwater-related subsidence 4,537 papers	Underground mining (soft rock) 4,349 papers	Surface mining 3,924 papers
Longwall mining 3,755 papers	Mine safety 3,712 papers	Rock burst 2,169 papers	Coal basin 1,753 papers
Coal field 1,695 papers		Underground coal gasification 1,611 papers

Trends

Notes

History