Production of Coal from Below Ground Workings by Mechanisations and Method of Work in Purulia District of West Bengal (2010) | |||||||||
(In Tonne) | |||||||||
District | Total Below Ground Output | Mechanisation | Method of Work | ||||||
Fully Mechanised | Semi Mechanised | Manual | Board and Pillar | Longwall | |||||
Solid Blasting | Others | Development | Depillaring/Caving/Stowing | Splitting as Final Operation | |||||
Purulia | |||||||||
West Bengal |