Research and development contract for coal mine communication system. Volume 3, Theoretical data base

Laubengayer, William C.; Ware, K. Michael; Gehring, Robert D.; Wilson, Larry R.; Decker, Ramsey P.; Anderson, Dean T.

Back to Previous Page

- Add this to...
- Twitter
- Facebook
- Google Bookmarks
- LinkedIn

Research and development contract for coal mine communication system. Volume 3, Theoretical data base

Published Date:

15 November 1974

Series:

Open file report (United States. Bureau of Mines) ; 1975-69 ; Collins report ; v. 3 ;

Language:

English

[PDF-5.05 MB]

This document cannot be previewed automatically as it exceeds 5 MB

Please click the thumbnail image to view the document.

Research and development contract for coal mine communication system. Volume 3, Theoretical data base

Details:

Personal Authors:

Laubengayer, William C. ; Ware, K. Michael ; Gehring, Robert D. ; Wilson, Larry R. ; Decker, Ramsey P. ; ... More ▼

Corporate Authors:

Collins Radio Company. . United States. Bureau of Mines. .

Keywords:

[+]

Description:

"Eight coal mines were visited to determine their communications usage and requirements. Presently available equipment was surveyed and evaluated to determine its applicability to the needs of the mines. The requirements, as determined from the surveys, and the capabilities, as determined from analysis and experiments, were summarized. Volume 3 contains all information used in predicting the performance of low-frequency transmissions in through-the-earth systems, along with the predictions themselves for typical situations." - NIOSHTIC-2

NIOSHTIC no. 10001395

523-0 765829-00 12 7 M

Document Type:

Report

Collection(s):

National Institute for Occupational Safety and Health

Funding:

USBM contract no. H0232056

Supporting Files:

No Additional Files

No Related Documents.

You May Also Like:

Research and development contract for coal mine communication system. Volume 1, Summary and results of system study

Personal Author:

Laubengayer, William C.; Ware, K. Michael; Gehring, Robert D.; Wilson, Larry R.; Decker, Ramsey P.; Anderson, Dean T.;

Corporate Author:

Collins Radio Company.. United States. Bureau of Mines..

Published:

15 November 1974

Series:

Open file report (United States. Bureau of Mines) ; 1975-69
Collins report ; v. 1

Description:

"Eight coal mines were visited to determine their communications usage and requirements. Presently available equipment was surveyed and evaluated to determine its applicability to the needs of the mines. The requirements, as determined from the surve...

File Type:

[PDF - 2.15 MB]
Through-the-earth electromagnetic trapped miner location systems : a review

Personal Author:

Pittman, Walter E., Jr.; Church, Ronald H.; McLendon, J. T.;

Corporate Author:

Tuscaloosa Research Center (United States. Bureau of Mines)

Published:

1985

Series:

Open file report (United States. Bureau of Mines) ; 1985-127

Description:

"In its role of providing technical assistance to the mining industry, the Bureau of Mines' Tuscaloosa Research Center has conducted research to develop trapped miner location systems which would aid in locating miners trapped by underground mining d...

File Type:

[PDF - 2.64 MB]
A method for locating abandoned mines

Personal Author:

Burdick, Richard G.; Snyder, L. E.; Kimbrough, W. F.;

Corporate Author:

United States. Bureau of Mines.

Published:

1986

Series:

Report of investigations (United States. Bureau of Mines) ; 9050

Description:

"The problems presented by old mine workings affect both present-day mining and land development. An automated method of locating these old mines from the surface using electrical resistivity techniques was developed earlier under a Bureau of Mines c...

File Type:

[PDF - 1.75 MB]
Propagation of EM signals in underground mines.

Personal Author:

Cory, Terry S.

Corporate Author:

United States. Bureau of Mines.. Collins Commercial Telecommunications Group. Circuit Switching Systems Division..

Published:

September 1977

Description:

"This report is a comprehensive summary of the results of the propagation measurements program conducted for the Bureau of Mines. Data were gathered in the medium frequency (mf) range from a cross sample of six mines representative of the industry ha...

File Type:

[PDF - 3.08 MB]
Medium-Frequency Propagation In Coal Mines

Personal Author:

Sacks, H. Kenneth; Chufo, Robert L.;

Published:

0/1/1900

Description:

Medium-frequency (MF) waves can propagate in a coal seam, bounded above and below by conducting rock, in an approximate transverse electro-magnetic (TEM) transmission-line mode with the electric field vertical and the magnetic field horizontal. The t...

File Type:

[PDF - 402.32 KB]