Bibliographic details
- Publisher
- Energy Information Administration, Office of Coal, Nuclear, Electric, and Alternate Fuels, U.S. Dept. of Energy
- Publication place
- Washington, D.C.
- Publication year
- 1995
- Language
- English
- Material type
- Book
- Physical description
- ix, 60 p.
Additional authors
United States.
Subjects
Longwall mining, Coal mines and mining