- Author
- Guest, P. G.
- Title
- Ignition of Natural Gas-Air Mixtures by Heated Surfaces.
- Coporate
- Bureau of Mines, Pittsburgh, PA
- Report
- Technical Paper 475, 1930, 59 p.
- Keywords
- natural gas | ignition | fire tests | gas explosions | mine gases | ignition temperature | experiments | lamps
- Abstract
- Many questions are still unanswered concerning the possible causes of gas explosions in mines. Several pertain to metallic surfaces that may have become heated in some manner. Electric wires and cables are usually thought of first in this connection; but many other factors, such as improperly lubricated bearings, overheated brake bands, and sliding car wheels, though perhaps less important, have at times given cause for concern. More potent, no doubt, as possible causes of mine explosions are red-hot cutter bits on mining machines and hot particles and sparks thrown off during the curring of coal and rock and from the impact of a fall of roof. Two other possible causes of mine explosions might be mentioned - accidentally exposed lamp filaments and overheated flame safefy lamp gauzes.