About this document
Mining Methods: Underground vs. Opencast by VB Things is a document available to read on EtoBox.
The document compares and contrasts factors that determine whether bord and pillar (B&P) mining or longwall (L&W) mining is suitable for a given coal seam. Some key factors include depth of the seam, thickness of the coal seam, dip of the seam, roof and floor conditions, hydrogeological conditions, gas levels, and propensity for spontaneous heating. B&P is generally suitable for shallow, flat seams with competent roof, while L&W can accommodate a wider range of conditions including deeper seams, thicker sea
- Author
- VB Things
- Language
- EN