Search Documents
Search Again
Search Again
Refine Search
Refine Search
- Relevance
- Most Recent
- Alphabetically
Sort by
- Relevance
- Most Recent
- Alphabetically
-
OFR-115(1)-78 Study Of Mine Fires And Mine Ventilation - Part I - Computer Simulation Of Ventilation Systems Under The Influence Of Mine Fires - SummaryBy Rudolf E. Greuer
The existing computer programs for the simulation of ventilation systems under normal ventilation conditions are reviewed and a suitable program for including the influence of mine fires is selected.
Jan 1, 2011
-
Direct Transformation of Metal Oxides into Metal-Organic Materials Using Mechanochemical Milling and "Accelerated Aging" TechniquesBy F. Qi, T. Frišcic, C. Mottillo
"One of the principal goals of modern industry is to minimize the environmental impact and increase the materials- and energy-efficiency of transforming raw materials into valuable products. This pape
Jan 1, 2012
-
Settling Velocities Of Particulate Systems - A Critical Review Of Some Useful ModelsBy A. K. Majumder
Particle motion in fluids is a subject of considerable practical importance to engineers working in fields such as hydraulics, river mechanics, chemical engineering and mineral processing. Many mathem
Jan 1, 2007
-
Inability to communicate : How technical professionals cut short their management careersBy H. Richard Eisenbeis, Donna M. Watkins
Many technical professionals (tp)* desire to occupy upper level management positions. But career paths for most scientists and engineers do not extend beyond their specific disciplines. This is unfort
Jan 8, 1987
-
RI 9071 - Capability Evaluation of the Radial-Axial SplitterBy S. J. Anderson
To deftne the capabilities of a nonexplosive excavation concept, the Bureau of Mines conducted reduced-scale laboratory tests of a mechanical excavation tool called a rock splitter. The splitter inve
Jan 1, 1987
-
Measuring the Flow of Solids in Solid-Liquid MixturesPrevious methods for measuring the flow of solids in Jnrdraulic conveying have not considered the important effects of slip velocity and particle concentration. In this paper an extension of the metho
Jan 1, 1971
-
Rock Mechanics - Stress Required to Initiate Core DiscingBy V. J. Parks, Leonard Obert, A. J. Durelli
The state of stress in the region where core discing initiates has been investigated through the use of three-dimensional photoelastic models and the results of this study have been compared with thos
Jan 1, 1969
-
The Effect Of Laboratory Cell Design On Flotation Machine Hydrodynamics, Solids Suspension And Particle RecoveryA large lab apparatus was designed using a scale-down methodology based on the design legacy of the current FLSmidth commercial forced air flotation machines. This new apparatus, along with a new test
Jan 1, 2012
-
Catastrophic Failures of Underground Evaporite MinesBy Jeff Whyatt
Deformation of underground salt, trona and potash mines is generally time dependent, providing for gradual adjustment of strata to mining induced stresses. Time dependence can allow for higher extract
Jan 1, 2008
-
OFR-68-82 New Procedure For Recovering Nickel And Cobalt From Western Laterites - Economic FeasibilityA pilot program was undertaken to evaluate a process developed by the U.S. Bureau of Mines to recover nickel, cobalt, copper and chromite from domestic nickel laterite resources. An existing five ton
Jan 1, 1982
-
Coal - Basic Study of Internal Vertical Stress Distribution in Confined Bulk SolidsBy W. J. Verner, J. R. Lucas
Billions of tons of bulk solid materials are processed through our industrial plants each year, and the tonnage is steadily rising. It has been estimated that for every dollar spent in industry as a w
Jan 1, 1961
-
IC 8932 Costs And Effects Of Environmental Protection Controls Regulating U.S. Phosphate Rock MiningBy Ronald F. Balazik
This Bureau of Mines study identifies and examines the costs of Federal, State, and local environmental protection controls on domestic phosphate rock mining, The costs include the expenditures needed
Jan 1, 1983
-
Study on Strata Control Based on Pillar Stress and Surface Cracks in Shallow Multi-Seam MiningIn order to ensure safe mining and reduce surface damage in shallow multiple-seam mining, the failure characteristics of interburden strata with different coal pillar offset distances between pillars
Jul 28, 2020
-
Crinum Mine 15 Longwalls in Weak Roof What Did We Learn about Supporting the Ground?By Dan Payne
The Crinum mine has recently completed workings in the southern area of the mine. Over the 10 years of longwall production 40 million tonnes have been extracted and the mine has experienced over 40 lo
Jan 1, 2008
-
Analysis of Plugging Effect for Open-Ended Piles in Sandy SoilBy Sangseom Jeong, Moonkyung Chung, Junyoung Ko
"Abstract The plugging effect of open-ended piles in sandy soil is analyzed by full-scale field test and plugging measurement. PLR (plug length ratio) measurement data from 144 field cases are analyze
Jan 1, 2014
-
A New Approach to Stope Scale Orebody MappingBy I Mason, A Wellington, J Hargreaves
Many people are familiar with the use of marine echo sounders which are used by fishermen to monitor water depth and locate schools of fish. Similar technology has recently been used in some West Aust
Jan 1, 2000
-
Extension of the Comminution Energy Curves and Application to Stirred Milling PerformanceBy P. Radziszewski
"The comminution energy curve is a profoundly simple graphical technique that displays detailed operating efficiency information for industrial comminution processes. The database underlying the meth
Jan 1, 2016
-
On-Stream Shale Detector for Sedimentary Iron OresBy Holmes R. J, Miles J. G
An on-stream shale detector has been developed that is suitable for use on conveyor belts carrying iron ore of up to 200 mm particle size. The shale is distinguished from high-grade iron ore by means
Jan 1, 1981
-
Road Haulage of Ore by Peko Mines N.L.With the proving of a mineable orebody at Orlando in May 1961, Peko Mines N.L. was faced with the decision of whether to mill the ore on site or to haul it 25 miles to central facilities at Peko. Orla
Jan 1, 1966
-
International Education Of Mining Engineers - An Update On The Australian Experience And International Opportunities For Collaboration - Preprint 09-003Collaboration between education providers is the key to long-term sustainability and improved quality in mining education. The mining industry is now, more than ever, an industry doing business on a
Jan 1, 2009