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, Pap Discuss, 1976–1977, P163–174

• Book ID: 103561143
• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 110 KB
• Volume: 16
• Category: Article
• ISSN: 0148-9062
• DOI: 10.1016/0148-9062(79)90408-x