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Thermodynamic properties of hedenbergite, a complex silicate of Ca, Fe, Mn, and Mg

Personal Author:

Bennington, K. O.; Beyer, R. P. (Richard P.); Brown, R. R. (Robert R.);

Corporate Author:

United States. Bureau of Mines.

Published:

1984

Series:

Report of investigations (United States. Bureau of Mines) ; 8873

Description:

"This investigation of the thermodynamic properties of hedenbergite is one of a series being performed at the Bureau of Mines on slag- type pyroxenes, which include the pair acmite [(nafe3+)(si2o6)] and the nearly identical mineral aegirine. These py...

File Type:

[PDF - 855.89 KB]
Safety analysis of surface haulage accidents—Part 1; Holmes Safety Association Bulletin - May-June 1997

Personal Author:

Randolph, Robert F.; Boldt, C. M. K.;

Published:

1/6/1997

Description:

Research on improving haulage truck safety, started by the U.S. Bureau of Mines, is being continued by its successors. This two-part article reports the orientation of the renewed research efforts, beginning with an update on accident data analysis, ...

File Type:

[PDF - 600.03 KB]
Influence of overlying strata on methane emissions in a northern West Virginia coal mine

Personal Author:

Ulery, J. P. (James P.); Molinda, G. M. (Gregory M.);

Corporate Author:

United States. Bureau of Mines.

Published:

1984

Series:

Report of investigations (United States. Bureau of Mines) ; 8879

Description:

"Since 1970, abnormally high methane emissions have been observed in eastern sections of the Federal No. 2 Mine operating in the Pittsburgh coalbed in northern West Virginia. The nature and volume of these emissions indicate a source other than the c...

File Type:

[PDF - 953.86 KB]
Electrolytic stripping of tin in an acid fluoborate electrolyte

Personal Author:

Groetsch, J. G. (John G.); Gabler, Robert C.; Wilson, Donald A.;

Corporate Author:

United States. Bureau of Mines.

Published:

1984

Series:

Report of investigations (United States. Bureau of Mines) ; 8887

Description:

"Municipal solid waste (MSW) contains about 8 pct ferrous metallics, which are typically recovered by magnetic separators at municipal resource recovery facilities. At present, only about 182,500 ton/yr of MSW magnetics are being processed for remelt...

File Type:

[PDF - 5.05 MB]
An analyzer for determining helium-4 in the parts-per-billion range

Personal Author:

Holland, Philip W.

Corporate Author:

United States. Bureau of Mines.

Published:

1984

Series:

Report of investigations (United States. Bureau of Mines) ; 8853

Description:

"The Bureau of Mines has developed a trace helium analyzer for determining helium-4 in the parts-per-billion range. The instrument is used for analyzing pure gases, laboratory-prepared standards, and atmospheric samples. Accuracy at the 95-pct confid...

File Type:

[PDF - 601.99 KB]
Reduction of Fire Hazards on Large Mining Equipment

Personal Author:

Rosa, Maria I. De

Published:

1/1/2008

Description:

Analysis of mining equipment fires from 1990 through 1999 reveals that there were 340 large mining equipment fires, resulting in 72 injuries and five fatalities. Many of the fires resulted in the loss of equipment and all posed potential or real risk...

File Type:

[PDF - 435.50 KB]
Borehole location system concept demonstration tests : final report

Personal Author:

Moore, T. C.; Rorden, L. H.; Kwong, C.;

Corporate Author:

DEVELCO, Inc.; United States. Bureau of Mines. Branch of Procurement.;

Published:

May 5, 1978

Series:

Open file report (United States. Bureau of Mines) ; 28-82

File Type:

[PDF - 4.71 MB]
Development Of Demonstration Hardware For Medium Frequency Mine Wireless Communication System - Executive Summary

Personal Author:

Stolarczyk, Larry G.

Published:

0/1/1900

Description:

[STATES REPORT Mining Research Mine Health and Safety Research for Period Ending 30 September 1980 PROGRAM Wireless MF Communication System DATE STARTED January 1980 TPO (USBM) Robert I. Chufo (PSRC) CO ( USBM) Alan G Bolton, Jr, (Mr. Patrick Neary R...

File Type:

[PDF - 1.69 MB]
Shield mechanics and critical load studies for unsymmetric contact configurations

Personal Author:

Barczak, Thomas M.

Corporate Author:

United States. Bureau of Mines.

Published:

1990

Series:

Report of investigations (United States. Bureau of Mines) ; 9290

Description:

"This U.S. Bureau of Mines report investigates shield mechanics and component stress development in a two-legged longwall shield for unsymmetric canopy and base contact configurations. Previous studies analyzed shield behavior for symmetric contact c...

File Type:

[PDF - 4.35 MB]
Shield-loading studies at an eastern Appalachian minesite

Corporate Author:

United States. Bureau of Mines.

Published:

1987

Series:

Report of investigations (United States. Bureau of Mines) ; 9098

Description:

"A primary objective of the Bureau of Mines geomechanics research program is to develop a better understanding of support behavior and interaction of supports with the strata so that supports can be more closely engineered to the geological condition...

File Type:

[PDF - 34.15 MB]
Failure Characteristics Of Roof Falls At An Underground Stone Mine In Southwestern Pennsylvania

Personal Author:

Iannachione, Anthony T.; Marshall, Thomas E.; Prosser, Leonard J.;

Published:

0/1/1900

Description:

The location and time of 2,007 microseismic emissions from a limestone mine in southwestern Pennsylvania were compared with the development of mine faces and the characteristics of the mine layout. Based on analyses of these results, the occurrence o...

File Type:

[PDF - 475.51 KB]
Development of a closed circuit TV borehole probe

Personal Author:

Talley, Douglas.

Corporate Author:

United States. Bureau of Mines.; Design Engineering Laboratories, Inc.;

Published:

September 1984

Series:

Open file report (United States. Bureau of Mines) ; 89-85
Mining research contract report

Description:

"This report describes a 4-in-diam borehole probe that contains a low light level television camera, magnetic compass, light illumination source, bottom-water detector sensor, and a point angle sensor. The camera viewing angle is at a right angle to ...

File Type:

[PDF - 918.14 KB]
Pillar load transfer associated with multiple-seam mining

Corporate Author:

United States. Bureau of Mines.

Published:

1987

Series:

Report of investigations (United States. Bureau of Mines) ; 9066

Description:

"The Bureau of Mines, as part of a program to improve mine planning and development, is currently investigating the effects of pillar load transfer, which can impact mining operations within a multiple- seam configuration. At two minesites where such...

File Type:

[PDF - 10.49 MB]
An exploratory study of loading and morphometric factors associated with specific failure modes in fatigue testing of lumbar motion segments

Personal Author:

Gallagher, Sean; Marras, William S.; Litsky, Alan S.; Burr, Deborah;

Published:

1/1/2006

Description:

Background. There is currently little information regarding factors associated with specific modes of motion segment failure using a fatigue failure model. Methods. Thirty-six human lumbar motion segments were fatigue tested using spinal compressive ...

File Type:

[PDF - 121.72 KB]
Impact Of Fan Type For Reducing Respirable Dust At An Underground Limestone Crushing Facility

Personal Author:

Chekan, G. J.; Colinet, J. F.; Grau, R. H., III;

Published:

0/1/1900

Description:

Researchers from the National Institute for Occupational Safety and Health have demonstrated that mine-wide ventilation in large-opening stone mines can be improved by using low-pressure, high-volume propeller fans and constructing stoppings in key l...

File Type:

[PDF - 751.54 KB]
The Unpredictable Life Cycle of a Coal Pillar

Personal Author:

Tadolini, Stephen C.; Zhang, Peter (Yunqing);

Published:

0/1/1900

Description:

A unique circumstance created by monitoring a pre-driven longwall recovery room permitted measuring the stresses of a coal pillar throughout its entire life cycle in less than a week. A fender pillar, created in approximately the middle of a longwall...

File Type:

[PDF - 1.14 MB]
Methane emissions from four working places in the Beckley mine, Raleigh County, W. Va.

Personal Author:

Jeran, P. W.; Lawhead, David H.; Irani, M. C.;

Corporate Author:

United States. Bureau of Mines.; Eastern Associated Coal Corp.;

Published:

1977

Series:

Report of investigations (United States. Bureau of Mines) ; 8212

Description:

"he Beckley Mine is one of five new mines in a heretofore unmined portion of the Beckley coalbed. The remoteness of these new mines from prior mining and their greater overburden preclude applying methane emission experience obtained in the old mines...

File Type:

[PDF - 525.37 KB]
Statistics-based Safety - Part 1: An Analysis of the Crushed Stone Injuries Occurring During a 10-year Span Provides Insight Into Improving Safety

Personal Author:

Karra, Vijia K., PH.D.

Published:

0/1/1900

Description:

Making sure workers within the aggregates industry go home safely each day is the goal of aggregate companies throughout the United States. At the National Institute for Occupational Safety and Health (NIOSH) researchers are contributing to NIOSH’s...

File Type:

[PDF - 396.02 KB]
Geotechnology in slate quarry operations

Personal Author:

Moebs, Noel N.; Sames, Gary P.; Marshall, Thomas E.;

Corporate Author:

United States. Bureau of Mines.

Published:

1985

Series:

Report of investigations (United States. Bureau of Mines) ; 9009

Description:

"This report summarizes a Bureau of Mines study on the use of geotechnology to identify and reduce ground control hazards at slate quarry operations in eastern Pennsylvania. The major ground control hazard is falling rock, attributed to weathered bed...

File Type:

[PDF - 19.86 MB]
Considerations In Training On-The-Job Trainers; Strategies For Improving Miners’ Training

Personal Author:

Wiehagen, Bill; Conrad, Don; Friend, Tom; Rethi, Lynn;

Published:

1/1/2002

Description:

On-the-job training (OJT) is a very common method of teaching job skills. Much of the training is done by experienced workers. This paper discusses small investments that can help improve the effectiveness of OJT. Effective OJT involves some structur...

File Type:

[PDF - 268.70 KB]

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