Technical note on ledging operations with the aid of hydraulic props at vaal reefs exploration and mining company Ltd(South Division) : Langer, J M; Hobday, H M D Assoc Mine Mangr, S Afr, Circ, N1, 1977, 9P

• Book ID: 103560433
• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 103 KB
• Volume: 14
• Category: Article
• ISSN: 0148-9062
• DOI: 10.1016/0148-9062(77)91023-3