A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Coal Mines Act of 1911 specified maximum of 25 volts for signaling; later order required bells modified to render them incapable of igniting gaseous mixture; practice of designing underground signaling gear in flameproof enclosures; describes types of signaling equipment, with particular reference to lowering and hoisting of men in coal-mine shafts.
Coal Mines Act of 1911 specified maximum of 25 volts for signaling; later order required bells modified to render them incapable of igniting gaseous mixture; practice of designing underground signaling gear in flameproof enclosures; describes types of signaling equipment, with particular reference to lowering and hoisting of men in coal-mine shafts.
Signalling in British coal mines
Coal Age
Fokes, L. (author)
Coal Age ; 33
1928
4 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Notes on firedamp drainage in British coal mines
| Engineering Index Backfile | 1963
The future use of refrigeration in British coal mines
| Online Contents | 1988
Prevention and suppression of dust in British coal mines
| Engineering Index Backfile | 1963
| TIBKAT | 1963
| Engineering Index Backfile | 1922