room-and-pillar

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room-and-pillar [′rüm ən ′pil·ər]

(mining engineering)

A system of mining in which the coal or ore is mined in rooms separated by narrow ribs or pillars; pillars are subsequently worked.

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No references found			INTRODUCTION Underground oil shale mining in Estonia is carried out by room-and-pillar method with blasting. Risk assessment of seismic impact on the roof and pillars stability ... by Sabanov, Sergei; Pastarus, Jyri-Rivaldo; Nikitin, Oleg; Vali, Erik / Estonian Journal of Engineering Currently room-and-pillar mining with drill and blast technology is used. Future of oil shale mining technology in Estonia by Karu, V.; Vastrik, A.; Anepaio, A.; Vaizene, V.; Adamson, A.; Valgma, I. / Oil Shale UMCO), the company which owns High Quality Mine, to restrict its mining to the room-and-pillar method and refrain from using longwall techniques in the area below the stream. PennFuture, DEP Win Case Protecting Stream and Natural Water System ... by Business Wire			rooftop unit rooftree Rook rook polynomial rook problem Rooke, Sir George rookery rookie Rooks County Rookwood pottery room room acoustics room air conditioner Room Air Humidifier room conveyor room criterion curves room crosscut room impulse response ROOM Methodology room monitor room noise room power room velocity Room, Abram Room, Abram Matveevich room-and-pillar room-door lock room-temperature IQ roomware Roon, Albrecht Theodor Emil, count von Roon, Albrecht Theodor Emil, Graf von Roon, Albrecht Von Rooney Rooney, Andy Rooney, Mickey Roos, Johann Heinrich Roosa, Stuart Roosebeke, battle of Roosendaal en Nispen Roosevelt Roosevelt Campobello International Park Roosevelt County Roosevelt Dam Roosevelt Day Roosevelt elk Roosevelt Island Roosevelt State Park Roosevelt, Edith Roosevelt, Eleanor Roosevelt, Franklin D Roosevelt, Franklin Delano			Room temperature superconductor Room Temperature Vulcanization Room Temperature Vulcanizing Room Temperature Wet Chemical Growth Room thermometer Room thermometer Room thermometer Room to Be Announced Room to Read Room to Room room to spare room to swing a cat room together room together Room Tone room used for the application of the laws room used for the public administration of justice room velocity room where justice is administered room with Room with A Moose Room With A View Room's Eye View Room, Abram Room, Abram Matveevich Room, Board and Watchful Oversight Room, Food and Beverage room-and-pillar room-door lock Room-Temperature Ferromagnetism room-temperature IQ Roomage Roomate roomed roomed roomed roomed roomed RoomEQWizard roomer roomer roomers roomers Roomes Roomes Roomes Roomes Roomes roomette roomettes roomful roomful roomful roomful roomfuls roomfuls roomfuls roomfuls

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