Search results
Results from the WOW.Com Content Network
The Centralia mine fire is a coal-seam fire that has been burning in the labyrinth of abandoned coal mines underneath the borough of Centralia, Pennsylvania, United States, since at least May 27, 1962. Its original cause and start date are still a matter of debate. [1][page needed][2][3][page needed] It is burning at depths of up to 300 ft (90 ...
A coal-seam fire is a burning of an outcrop or underground coal seam. Most coal-seam fires exhibit smouldering combustion, [1] particularly underground coal-seam fires, because of limited atmospheric oxygen availability. Coal-seam fire instances on Earth date back several million years. [2][3] Due to thermal insulation and the avoidance of rain ...
An underground power line provides electrical power with underground cables. Compared to overhead power lines, underground lines have lower risk of starting a wildfire and reduce the risk of the electrical supply being interrupted by outages during high winds, thunderstorms or heavy snow or ice storms. An added benefit of undergrounding is the ...
e. Subterranean warfare or underground warfare is warfare conducted underneath the ground surface. It is predominantly conducted in tunnels and underground cavities, both natural (such as caves) and artificial (such as sewerage and subway systems). Underground military facilities play a key role in many nations, and there are more than 10,000 ...
Diagram of the geological process of subduction. The Ring of Fire (also known as the Pacific Ring of Fire, the Rim of Fire, the Girdle of Fire or the Circum-Pacific belt) [ note 1 ] is a tectonic belt of volcanoes and earthquakes. It is about 40,000 km (25,000 mi) long [ 1 ] and up to about 500 km (310 mi) wide, [ 2 ] and surrounds most of the ...
Subterranean fiction is a subgenre of speculative fiction, science fiction, or fantasy which focuses on fictional underground settings, sometimes at the center of the Earth or otherwise deep below the surface. The genre is based on, and has in turn influenced, the Hollow Earth theory. The earliest works in the genre were Enlightenment -era ...
Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface. It is a non-intrusive method of surveying the sub-surface to investigate underground utilities such as concrete, asphalt, metals, pipes, cables or masonry. [1] This nondestructive method uses electromagnetic radiation in the microwave band ...
Report of an inquiry into health and safety aspects of stoppages caused by fire and bomb alerts on London Underground, British Rail and other mass transit systems. HSE Books. ISBN 0-11-886394-0. Chambers, P. (2006). Body 115: The Story of the Last Victim of the King's Cross Fire. John Wiley & Sons. ISBN 0-470-01808-9. Moodie, K. (1992).