Underground mining techniques - Universidade Federal do, Underground Mining Methods and Applications Production Headframe Hans Hamrin*, Room-and-pillar mining is designed for flat-bedded deposits of limited thickness, such as copper shale, coal, salt and potash,, allows trackless equipment to be used in drilling and mucking
CIVIL ENGINEERING – Vol. II - Underground Mining Methods and Equipment - S. Okubo and J. Yamatomi ... Room-and-pillar mining is suitable for flat or nearly horizontal tabular deposits. If the ore bodies are moderately inclined (>30°) it is impractical to utilize tired mobile equipment, resulting in reduced productivity. If the competence of the hanging wall and/or the ore is insufficient ...
Room and Pillar Mining Method 1. Hassan Z. Harraz [email protected] 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.
Room and pillar mining is usually used while extracting coal, iron, and copper ores; it is best suited for deposits that are relatively flat. Rooms generally are 2,067 feet (630 m) wide and pillars are up to 328 feet (100 m) wide; pillars, and subsequent grid-like patterns, are formed as mining advances.