Location of interachamber pillars when working contiguous ore bodies by the room-and-pillar system

✍ Scribed by V. L. Vodop'yanov

• Publisher: Springer
• Year: 1973
• Tongue: English
• Weight: 291 KB
• Volume: 9
• Category: Article
• ISSN: 1573-8736
• DOI: 10.1007/bf02501166