Stephen B. Thacker CDC Library collection

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National Institute for Occupational Safety and Health

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Numerical study on effects of coal properties on spontaneous heating in longwall gob areas

Personal Author:

Yuan, Liming; Smith, Alex C.;

Published:

1/1/2008

Description:

A computational fluid dynamics (CFD) study was conducted to model effects of coal properties on the potential for spontaneous heating in longwall gob (mined out) areas. A two longwall panel district using a bleeder ventilation system was simulated. T...

File Type:

[PDF - 956.05 KB]
Alternative Methodologies For Evaluating Explosion-Resistant Mine Ventilation Seals

Personal Author:

Sapko, Michael J.; Weiss, Eric S.; Harteis, Samuel P.;

Published:

0/1/1900

Description:

The Pittsburgh Research Laboratory (PRL) of the National Institute for Occupational Safety and Health (NIOSH) recently conducted full-scale explosion experiments; these experiments evaluated the strength characteristics of various seal designs used f...

File Type:

[PDF - 412.32 KB]
A comparison between ignition behaviours of 7 different UK and World-Traded coals in air, and in a mixture of oxygen and carbon dioxide gases representative of oxy-combustion conditions

Personal Author:

Flower, Mark; Man, Chi; Gibbins, Jon; McGlashan, Niall;

Published:

1/1/2009

Description:

A 20L ignition test chamber has been used to test suspensions of 7 UK and world traded coals in air and O2/CO2 mixtures typical of oxy-combustion conditions. The coals varied in rank from sub-bituminous to bituminous and were tested in varying concen...

File Type:

[PDF - 242.61 KB]
Assessments And Refinements Of An Anthropodynamic Manikin For Seating Dynamics Applications - Introduction; Proceedings Of The First American Conference On Human Vibration

Personal Author:

Patra, S. K.; Rakheja, S.; Boileau, P. E.; Nelisse, H.; Natani, A.;

Published:

6/1/2006

Description:

The current laboratory methods for assessing the vibration attenuation performance of seats involve repetitive trials with a number of human occupants, and raise certain ethical concerns. Moreover, the measurements with human subjects yield considera...

File Type:

[PDF - 179.69 KB]
Three-dimensional time-lapse velocity tomography of an underground longwall panel

Personal Author:

Luxbacher, Kray; Westman, Erik; Swanson, Peter; Karfakis, Mario;

Published:

0/1/1900

Description:

Three-dimensional velocity tomograms were generated to image the stress redistribution around an underground coal longwall panel to produce a better understanding of the mechanisms that lead to ground failure, especially rockbursts. Mining-induced mi...

File Type:

[PDF - 2.04 MB]
Remote Monitoring of Mine Seismicity and Earthquakes Using Radio Telemetry, Computers, and the Internet

Personal Author:

Denton, D.; Stickney , M.; Williams, T.; Langston, R.;

Published:

0/1/1900

Description:

The National Institute for Occupational Safety and Health and the Stillwater Mining Company worked cooperatively with the Montana Bureau of Mines and Geology to develop a system that would collect seismic data at the Stillwater and East Boulder mines...

File Type:

[PDF - 549.57 KB]
Factors Influencing Intersection Stability In U.S. Coal Mines

Personal Author:

Molinda, Gregory; Mark, Christopher; Bauer, Eric; Babich, Daniel; Pappas, Deno;

Published:

0/1/1900

Description:

Groundfalls are much more likely to occur in coal mine intersections than in entries. NIOSH is using the experience of U.S. coal mines to determine the factors which influence intersection instability and provide guidelines for the safe excavation an...

File Type:

[PDF - 484.93 KB]
Snapshot of Noise and Worker Exposures in Sand and Gravel Operations

Personal Author:

Bauer, E. R.; Spencer, E. R.;

Published:

0/1/1900

Description:

Previous studies and research efforts have shown that noise-induced hearing loss (NIHL) is a problem in the U.S. mining industry. In response, researchers at the National Institute for Occupational Safety and Health (NIOSH) have been conducting a cro...

File Type:

[PDF - 955.20 KB]
Effects Of Bolt Spacing, Bolt Length, And Roof Span On Bolt Loading In A Trona Mine

Personal Author:

Signer, S. P.; Raines, R.;

Published:

0/1/1900

Description:

Researchers from the Spokane Research Laboratory of the National Institute for Occupational Safety and Health installed 39instrumented, fully grouted bolts at six test sites in a trona mine retreat panel to study mine roof stability for the improveme...

File Type:

[PDF - 318.63 KB]
Musculoskeletal Symptoms Among Operators Of Heavy Mobile Equipment; Proceedings Of The First American Conference On Human Vibration

Personal Author:

Kittusamy, N. Kumar

Published:

6/1/2006

Description:

The purpose of this study was to assess the adequacy of the cab design and to determine the percentage of musculoskeletal symptoms among operators of mobile equipment used in mining and construction. A questionnaire was designed to assess demographic...

File Type:

[PDF - 160.38 KB]
Experimental And Modeling Investigation Of The Effect Of Ventilation On Smoke Rollback In A Mine Entry

Personal Author:

Edwards, J. C.; Franks, R. A.; Friel, G .F.; Yuan, L.;

Published:

0/1/1900

Description:

To determine the critical air velocity for preventing smoke rollback, diesel-fuel fire experiments were conducted in the National Institute for Occupational Safety and Health’s (NIOSH) Pittsburgh Research Laboratory’s Safety Research Coal Mine. S...

File Type:

[PDF - 439.26 KB]
MSHA Kicks Off Winter Alert Campaign; The Department of Labor - Mine Safety and Health Administration - Joseph A. Holmes Safety

Published:

1/1/2006

Description:

The U.S. Department of Labor s Mine Safety and Health Administration (MSHA),through its winter alert program, warns U.S. mine operators and miners at underground coal mines of workplace hazards that can arise when the weather turns colder. MSHA recor...

File Type:

[PDF - 593.18 KB]
New Tools For Roof Support Evaluation And Design

Personal Author:

Signer, Steve; Sunderman, Carl;

Published:

0/1/1900

Description:

Researchers at the National Institute for Occupational Safety and Health (NIOSH) have developed several new tools for evaluating roof support performance. A miniature data acquisition system (MIDAS) was developed that can collect readings from up to ...

File Type:

[PDF - 530.05 KB]
Roof And Rib Fall Incidents And Statistics: A Recent Profile; Proceedings: New Technology For Coal Mine Roof Support

Personal Author:

Pappas, Deno M.; Bauer, Eric R.; Mark, Christopher, PH.D.;

Published:

10/1/2000

Description:

During 1998-99, groundfall incidents resulted in 27 fatalities and were responsible for over 70% of all deaths in U.S. underground coal mines. To obtain a better understanding of where and why these incidents occurred, a comprehensive analysis of gro...

File Type:

[PDF - 495.35 KB]
Evaluation Of Iyoni II Methanometers

Personal Author:

Chilton, Joseph E.; Taylor, Charles D.; Timko, Robert J.;

Published:

0/1/1900

Description:

No regular monitoring of methane is required in areas of gassy coal mines outby the mining face. Methane ignitions that have occurred in mine outby areas indicate the need to provide better protection to workers. Handheld methane monitors are now use...

File Type:

[PDF - 410.77 KB]
Load Capacity And Stiffness Characteristics Of Screen Materials Used For Surface Control In Underground Coal Mines

Personal Author:

Dolinar, Dennis R.

Published:

0/1/1900

Description:

Screen material in the form of welded wire mesh and geogrids are used in underground coal mines to prevent the fall of small pieces of rock from the roof between roof bolts. Further, if the screen is installed during the production cycle, roof fall i...

File Type:

[PDF - 804.14 KB]
In Situ Stress Measurements At The Stillwater Mine, Nye, Montana

Personal Author:

Johnson, Jeffrey; Brady, Thomas; MacLaughlin, Mary; Langston, Radford; Kirsten, Hendrik;

Published:

0/1/1900

Description:

The magnitudes and directions of in situ stresses affect the stability of mine openings, as well as the type and amount of ground support needed to maintain a safe working environment for miners. Using hollow inclusion stress cells, researchers from ...

File Type:

[PDF - 457.40 KB]
Evaluation Of The Capability Of Seat Suspension To Reduce The Operator Exposure To Vibration In Track Type Tractors. - Introduction; Proceedings Of The First American Conference On Human Vibration

Personal Author:

Contratto, Michael S.; Brodersen, Tom; Marshall, Dave;

Published:

6/1/2006

Description:

The European Union (EU) completed a new directive 2002/44/EC1 called the Physical Agents Directive (PAD) that establishes action and limit values for hand-arm and whole body vibrations. The directive specifies that: workers shall not be exposed above...

File Type:

[PDF - 161.51 KB]
Decision Making During A Simulated Mine Fire Escape

Personal Author:

Cole, Henry P.; Vaught, Charles; Wiehagen, William J.; Haley, John V.; Brnich, Michael J., Jr.;

Published:

0/1/1900

Description:

Forty-eight workers who bad escaped large underground coal-mine fires were interviewed using an open-ended protocol. This information, and the actual experiences of one eight-person mine-section crew who escaped from a Fire, were used to construct an...

File Type:

[PDF - 704.20 KB]