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Tectonic Stress Reconstruction Based on Structural Features in Tectonic Superposition Areas Mining, Metallurgy and Exploration
By Chen Lin
Tectonic stress is an important parameter for understanding the dynamics of underground engineering and for the exploitation of coalbed methane. Multiple-period structural features usually have comple
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An Evaluation Of The Risks Of Lung Cancer And Mesothelioma From Exposure To Amphibole Cleavage Fragments
By John F. Gamble
Amphiboles are hydrated mineral silicates five of which occur in asbestiform habits as asbestos grunerite (amosite) asbestos, riebeckite (crocidolite) asbestos, anthophyllite asbestos, tremolite asbes
Jan 1, 2007
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Roof Deformation Associated with Mining of Two Panels in Steeply Dipping Coal Seam Using Subsurface Subsidence Prediction Model Mining, Metallurgy and Exploration and Physical Simulation Experiment
By Panshi Xie, Xicai Gao, Yi Luo, Youfu Zeng, Yongping Wu, Shenghu Luo
This research investigates roof deformation and failure characteristics, as well as mechanical interaction between the panels of the roof strata above two adjacent working faces in a steeply inclined
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Roof Deformation Associated with Mining of Two Panels in Steeply Dipping Coal Seam Using Subsurface Subsidence Prediction Model Mining, Metallurgy and Exploration and Physical Simulation Experiment (1cbe2caf-b863-422d-8af1-56b552bbfc8f)
By Panshi Xie, Xicai Gao, Yi Luo, Youfu Zeng, Yongping Wu, Shenghu Luo
This research investigates roof deformation and failure characteristics, as well as mechanical interaction between the panels of the roof strata above two adjacent working faces in a steeply inclined
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The As-Built Geotechnical Report: Its Use For Design Of Support For Three Rock Stations Washington, D.C. Metro
By Carl G. Bock
INTRODUCTION The Washington Metropolitan Area Transit Authority (WMATA) has let a contract for the excavation of three rock stations, spaced about 3550' (1082m) apart, beneath Connecticut Aven
Jan 1, 1976
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Identification And Enumeration Of Asbestos Fibers In The Mining Environment: Mission And Modification To The Federal Asbestos Standard
By Arthur M. Langer
Since the promulgation of the first Federal Asbestos Standard by the Occupational Safety and Health Administration in 1972, other federal agencies have modified the standard to better carry on their
Jan 1, 2008
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Coal Beneficiation via the Tapered Fluidized Bed Using Magnetite with a Wide Size Range Mining, Metallurgy and Exploration (57dbcb5f-d720-4602-989e-b44427f0ae7a)
By Xuchen Fan, Chenyang Zhou, Yuemin Zhao, Liang Dong, Chenlong Duan
A gas–solid fluidized bed using magnetite particles is an effective methodology for coal beneficiation in the field of dry coal cleaning. Broadening the size range of magnetite used in the bed decreas
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Assessment Of Stable And Failed Pillars In Underground Limestone Mines
Pillars in underground limestone mines are required to support the overburden and provide a safe, stable working environment for mining personnel and equipment. Pillar stability was assessed by the Na
Jan 1, 2008
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Inner City Slurry Tunneling—Project Asdam, Antwerp, Belgium
By Klaus Rieker
North of Antwerp central train station, two single-track tunnels for the high-speed train line between Brussels and Amsterdam were constructed. At the same time, the central train station was modified
Jan 1, 2007
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An Investigation On The Surface Chemistry Of Some Rare Earth Minerals During Flotation By TOF-SIMS (I-Bench Scale Tests)
By S. C. Chelgani
The Thor lake deposit is a world class resource of rare earth (REE) metals and minerals in Canada. Development work to optimize a REE mineral recovery process flow sheet is underway, however, given th
Feb 27, 2013
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Urban Blasting Essential to Schedule Driven West Area CSO Tunnel and Pumping Station Project
By James McNally, Adam Stremcha, John MacGregor
With 13.7km of TBM tunneling in Atlanta’s hard gneiss well under way, drill and shoot work continues on several sites throughout the city. In order for the City of Atlanta to meet the consent decree i
Jan 1, 2007
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Design Analyses for a Large-Span Tunnel in Weak Rock Subject to Strong Seismic Shaking
By Bhaskar B. Thapa
The proposed Caldecott fourth bore will consist of a two lane highway tunnel along California State Route 24 near the City of Oakland. The proposed design and construction sequence for the 15-m-diamet
Jan 1, 2008
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Evaluation of Mica as a Source of Potash Mining, Metallurgy and Exploration
By Nikhil Dhawan, Ashwini Kumar, Yogendra Pratap, Himanshu Tanvar
India does not possess any soluble potash reserves and depends completely on imports. In this study, an attempt has been made to recover potash (K) values from the mica sample employing thermal and me
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Pillar And Roof Bolting Design Under Conditions Of Weak Roof And Multi-Seam Interaction - A Case Study
By Y. Q. Zhang, S. S. Peng
Numerical modeling was used to design the pillars and bolting plan for a mine with weak roof and multi-seam stress condition. Previous mining experience, pillar/roof yielding and in-situ horizontal st
Jan 1, 2004
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Analysis Of Real-Time Shield Pressures For The Evaluation Of Longwall Ground Control Problems
By K. Saikiran, A. R. Nalla
Longwall management, regular shield maintenance, and evaluation of ground control problems can be performed using real-time shield monitoring program. Based on real-time shield pressure data, evaluat
Jan 1, 2000
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Design And Preliminary Testing Of Low-Energy Planetary Excavator - Preprint 09-134
Development of a permanent human base on the Moon for exploration requires a self sustaining system. This entails production and processing of limited amounts of raw material on the Moon. Any mining a
Jan 1, 2009
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International Standards in Public Participation in Financing Oil and Gas Pipelines: The Transparency of Risk Management Measures and Emergency Response Plans
By E. Nickel
"Bi- and multilateral banks as well as export credit agencies in the OECD countries, but also numerous commercial banks, last year committed themselves to compliance with the World Bank’s standards. T
Jan 1, 2005
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The Coronado Traffic Diversion Tunnel
By Jon Y. Kaneshiro, Ed Walton, Stephen J. Navin, Robert M. Sergeant, Storer J. Boone
The Coronado Traffic Tunnel is a proposed two-lane, reversible, road tunnel, which will relieve severe peak hour congestion problems on surface streets. The tunnel will take traffic from the Coronado
Jan 1, 2001
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Evaluation of Whole Body Vibration (WBV) of Dumper Operators Based on Job Cycle Mining, Metallurgy and Exploration (4615660d-b95c-47f0-b07e-3e2b55f50187)
By Sandeep Kumar Jeripotula, Govinda Raj Mandela, Aruna Manglapady
Dumper operators are frequently exposed to whole body vibration (WBV) in surface mines. Surface mining activities involve the amalgamation of comparatively high intensity of vibration and extended exp
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Face Ventilation on a Bleederless Longwall Panel Mining, Metallurgy and Exploration
By S. J. Schatzel, J. D. Addis, V. Gangrade, L. L. Chasko, C. A. Hollerich
A ventilation study using tracer gas was conducted at a western US coal mine. The objective of the study was to evaluate the movement of longwall face air exchanges between the face and worked-out are