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What is Pillar Design in South African Coal Mining about?

Bord-and-pillar mining is the most important method of coal extraction in South African mines. It has advantages like operational flexibility and maintaining roof integrity, but disadvantages like lower productivity compared to other methods. The amount of coal lost in pillars and productivity decrease with increasing mining depth and seam thickness. The optimal areas of application for bord-and-pillar mining are delineated based on these factors and the coal-to-waste ratio. Improving pillar design procedur

Author

dptchut

Language

EN