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- Room_and_pillar abstract "Room and pillar (variant of breast stoping), also called pillar and stall, is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. The ore is extracted in two phases. In the first, "pillars" of untouched material are left to support the roof overburden, and open areas or "rooms" are extracted underground; the pillars are then partially extracted in the same manner as in the "Bord & Pillar method". The technique is usually used for relatively flat-lying deposits, such as those that follow a particular stratum.The room and pillar system is used in mining coal, iron and base metals ores, particularly when found as manto or blanket deposits, stone and aggregates, talc, soda ash and potash.The key to successful room and pillar mining is in the selection of the optimum pillar size. In general practice, the size of both room and pillars are kept almost equal, while in Bord & Pillar, pillar size is much larger than bord (gallery). If the pillars are too small the mine will collapse, but if they are too large then significant quantities of valuable material will be left behind, reducing the profitability of the mine. The percentage of material mined varies depending on many factors, including the material mined, height of the pillar, and roof conditions; typical values are: stone and aggregates 75 percent, coal 60 percent, and potash 50 percent.".
- Room_and_pillar thumbnail OldRoomAndPillar.png?width=300.
- Room_and_pillar wikiPageID "10148836".
- Room_and_pillar wikiPageLength "5885".
- Room_and_pillar wikiPageOutDegree "20".
- Room_and_pillar wikiPageRevisionID "632365282".
- Room_and_pillar wikiPageWikiLink Base_metal.
- Room_and_pillar wikiPageWikiLink Category:Underground_mining.
- Room_and_pillar wikiPageWikiLink Coal.
- Room_and_pillar wikiPageWikiLink Construction_aggregate.
- Room_and_pillar wikiPageWikiLink Fault_(geology).
- Room_and_pillar wikiPageWikiLink Iron_ore.
- Room_and_pillar wikiPageWikiLink Longwall_mining.
- Room_and_pillar wikiPageWikiLink Manto_ore_deposits.
- Room_and_pillar wikiPageWikiLink Mine_Safety_and_Health_Administration.
- Room_and_pillar wikiPageWikiLink Mining.
- Room_and_pillar wikiPageWikiLink Overburden.
- Room_and_pillar wikiPageWikiLink Polymetallic_replacement_deposit.
- Room_and_pillar wikiPageWikiLink Potash.
- Room_and_pillar wikiPageWikiLink Profit_(accounting).
- Room_and_pillar wikiPageWikiLink Retreat_mining.
- Room_and_pillar wikiPageWikiLink Rock_(geology).
- Room_and_pillar wikiPageWikiLink Soda_ash.
- Room_and_pillar wikiPageWikiLink Sodium_carbonate.
- Room_and_pillar wikiPageWikiLink Stratum.
- Room_and_pillar wikiPageWikiLink Talc.
- Room_and_pillar wikiPageWikiLink File:Barrier_Panel.png.
- Room_and_pillar wikiPageWikiLink File:OldRoomAndPillar.png.
- Room_and_pillar wikiPageWikiLinkText "Room and pillar mining".
- Room_and_pillar wikiPageWikiLinkText "Room and pillar".
- Room_and_pillar wikiPageWikiLinkText "Room-and-pillar mining".
- Room_and_pillar wikiPageWikiLinkText "barrier pillar".
- Room_and_pillar wikiPageWikiLinkText "completely horizontal".
- Room_and_pillar wikiPageWikiLinkText "open stope and pillar".
- Room_and_pillar wikiPageWikiLinkText "pillar and stall".
- Room_and_pillar wikiPageWikiLinkText "pillars".
- Room_and_pillar wikiPageWikiLinkText "room and pillar mining".
- Room_and_pillar wikiPageWikiLinkText "room and pillar or bord and pillar".
- Room_and_pillar wikiPageWikiLinkText "room and pillar".
- Room_and_pillar wikiPageWikiLinkText "room-and-pillar method".
- Room_and_pillar wikiPageWikiLinkText "room-and-pillar".
- Room_and_pillar wikiPageWikiLinkText "undermined".
- Room_and_pillar hasPhotoCollection Room_and_pillar.
- Room_and_pillar wikiPageUsesTemplate Template:Cite_book.
- Room_and_pillar wikiPageUsesTemplate Template:Mining_techniques.
- Room_and_pillar wikiPageUsesTemplate Template:Portal.
- Room_and_pillar wikiPageUsesTemplate Template:Reflist.
- Room_and_pillar wikiPageUsesTemplate Template:Sfnp.
- Room_and_pillar subject Category:Underground_mining.
- Room_and_pillar hypernym System.
- Room_and_pillar type Technique.
- Room_and_pillar comment "Room and pillar (variant of breast stoping), also called pillar and stall, is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. The ore is extracted in two phases. In the first, "pillars" of untouched material are left to support the roof overburden, and open areas or "rooms" are extracted underground; the pillars are then partially extracted in the same manner as in the "Bord & Pillar method".".
- Room_and_pillar label "Room and pillar".
- Room_and_pillar sameAs Kammerbau.
- Room_and_pillar sameAs Méthode_des_chambres_et_piliers.
- Room_and_pillar sameAs m.02q3dtv.
- Room_and_pillar sameAs Коморно_стубне_методе_откопавања.
- Room_and_pillar sameAs Камерна_система_розробки.
- Room_and_pillar sameAs Q2505150.
- Room_and_pillar sameAs Q2505150.
- Room_and_pillar wasDerivedFrom Room_and_pillar?oldid=632365282.
- Room_and_pillar depiction OldRoomAndPillar.png.
- Room_and_pillar isPrimaryTopicOf Room_and_pillar.
