✦ LIBER ✦
Study of roof falls in underground mines on the Pocahontas no 3 seam, Southern West Virginia and Southwestern Virginia : Ferm, J C; Melton, R A; Cummins, G D USBM OFR 36–80, Sept 1978, 92P
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 121 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0148-9062
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