Oct 22 2014 · Room and Pillar Mining Method 1 Hassan Z Harraz hharraz2006 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 ...As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.
Get Price
Main Equipments: PE series jaw crusher, impact crusher, sand maker, raymond grinding mill, vibrating screen and vibrating feeder....
Raw Material: limestone
Capacity: 100t/h
Size of Finished case: 0.125mm-0.044mm
quartz with the color of black, dark gray and dark brown is a common basic volcanic rock mineral. With advantages of good corrosion resistance, compression resistance and oxidation resistance, quartz is widely used in roads, railways, construction, buildi...
Processing capacity: 30-700 t/hApplied material: quartz, bank gravel
Application:Mining, metallurgy, building materials, highway, railway, water conservancy and chemical engineering.
...
Capacity:50-500TPH
Materials:Granite, basalt, bank gravel, bauxite, cement clinker, quartz silicon carbide,limestone, river stone, etc.
The 200-350t/h sand production line in Turkey is designed in August, 2014, and put into use in October. .
...
Raw Material: limestone
Crushing Capacity: 200t/h-350t/h
Feeding Size: 0mm-700mm
Oct 22 2014 · Room and Pillar Mining Method 1 Hassan Z Harraz hharraz2006 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
Get PriceRoom And Pillar Coal Mining Ppt polrecreatienl 2 Room BordandPillar mining or continuous mining method It is the most common supported pillar method designed and used primarily for mining flatlying seams or tabular orebodies or gently dipping bedded ore deposits of limited thickness like coal oil shale limestone phosphate salt trona potash and bedded uranium ores
Get PriceApr 10 2013 · Two of the ways that they mine underground are Room and pillar mining there are intersecting rooms with pillars of coal thathold up the roof These pillars are mined when the mine or a part of it areclosing They are careful when they do this because the roof caves in as theyleave Longwall mining usually a machine called a continuous
Get Pricestanding to support the mine roof Once room and pillar mines have been developed to a stopping point limited by geology ventilation or economics a supplementary version of room and pillar mining termed second mining or retreat mining is commonly started Miners remove the coal in the pillars thereby recovering as much
Get PriceJul 18 2004 · Unfortunately the item Room and Pillar Mining Presentation id 63363 which price is 1 has no available description yet The item rating has 4 stars with 1 votes Advance package 36 Download Free Samples PowerPoint Templates Features More
Get PriceAcknowledgments Jeff Fields Senior Engineer Jim Sublett Senior Sourcing Specialist GAI Consultants Project Designer Bob Turka Senior Project Manager Mining History at the White River Mine Mined in the 1920s and 1930s using the room and pillar method No evidence of retreat or split pillar mining Mine was flooded To this day The pillars are
Get PriceRoomandpillar mining method has a low recovery rate a large percentage of ore remains in place underground In many room and pillar mines the pillars are taken out sta rting at the farthest
Get PriceRoom and pillar is an underground mining method that has applications to a wide variety of hardrock deposits worldwide It is commonly classified as an openstoping method meaning that development involves mining out underground cavities while leaving the
Get Price13 Roomandpillar Mining Roomandpillar 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 andor the ore is
Get PriceRoomandpillar mining method has a low recovery rate a large percentage of ore remains in place underground In many room and pillar mines the pillars are tak en out starting at the farthest
Get PriceOffice Add: Kexue Revenue, High and New Technology Industrial Development Zone, Zhengzhou, China
Email: [email protected]