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A gas explosion is an explosion resulting from a gas leak in the presence of an ignition source. The principal explosive gases are natural gas, methane, propane and butane, because they are widely used for heating purposes. However, many other gases, like hydrogen, are combustible and have caused explosions in the past. Industrial gas explosions can be prevented with the use of intrinsic safety barriers to prevent ignition.
An incomplete list of gas explosions
- The New London School explosion occurred on March 18, 1937, when a natural gas leak caused an explosion, destroying the New London School of the city of New London, Texas. The disaster killed three hundred students and teachers.
- The Cleveland East Ohio Gas Explosion occurred on the afternoon of Friday, October 20, 1944. The resulting gas leak, explosion and fires killed 130 people and destroyed a one square mile area on Cleveland, Ohio’s east side.
- On October 31, 1963, The Indianapolis Coliseum Explosion (now known as the Pepsi Coliseum) occurred during the opening night for the Holiday on Ice show, killing 74 and injuring nearly 400. The cause was an explosion following a propane tank leak.
- LaSalle Heights Disaster March 1, 1965. Gas line fractured in a low-cost residential neighborhood near Montreal, Quebec, killing 28 people and injuring 39.
- Reading, Pennsylvania, January 9th, 1968. An explosion killed nine persons and demolished two houses. A gas company spokesman, said Reading workmen digging in the street to repair a water main had hit a gas line shortly before the explosion.
- The Richmond, Indiana explosion, on Saturday, April 6, 1968. Two explosions occur in mid-afternoon, in the middle of downtown Richmond, Indiana. The first is caused by a natural gas leak, and the second, by gunpowder and ammunition inside a sporting goods store. 41 people are killed and more than 150 injured. Four square blocks of downtown Richmond, Indiana are heavily damaged by the explosion or subsequent fire.
- Ronan Point was a 23-story council tower block in Newham, east London. On 16 May 1968 a gas explosion caused the collapse of a whole corner of the building. Four people were killed in the collapse, with one dying later of injuries.
- In April 8, 1970, when underconstructing, following to gas explosion that occurred in Tenjimbashisuji Rokuchōme Station, Osaka Municipal Subway Tanimachi Line, Kita-ku, (formerly Oyodo district) Osaka, Japan, which 79 people died, 420 of those injured name. Damage of the house says 26 houses total reflexion, 336 units of damage in response to the blast, houses nearby window or glass door was broken in the blast still even with 1,000 units or more. 
- Clarkston explosion on 21 October 1971, a build-up of gas under a shopping centre left 22 dead and around 100 injured.
- 23 May 1984 Abbeystead disaster - an explosion resulting in 16 deaths and 22 injured from Methane entering waterwork pipes.
- 24 March 1986 Loscoe gas explosion - no fatalities but extensive property destruction, this caused the UK Government to legislate on landfill sites and building practices with regard to landfill gas migration.
- In July 1988, 167 people died when Occidental Petroleum's Alpha offshore production platform, on the Piper field in the North Sea, exploded after a gas leak
- The 1989 Ufa train disaster was caused by a gas explosion from a leaking pipeline as two trains went by, their sparks igniting the gas. 575 people died.
- The 1992 explosion in Guadalajara, Mexico's second largest city, took place on April 22, 1992 in the downtown district of Analco. Numerous gasoline explosions in the sewer system over four hours destroyed kilometers of streets. Officially, 206 people were killed, nearly 500 injured and 15,000 were left homeless.
- In April 28, 1995, Daegu Subway Line 1 Chapter 1-2 range interval is an explosion occurred on construction sites. The accident caused the accident area in the south west point Daegu Department Store Merchant grouting for new construction sites for drilling a 75mm hole drilling 31 drills by mistake by the city gas pipeline through the holes by punching the gas leak, near drain through a subway construction site been introduced into the explosion by fire of unknown cause is the one to buy. Of 50 m with an explosion of fire soared, and killed 101 people, include 42 Dalseo Sangindong high school students, 202 people were injured in Sangindong, Daegu, South Korea. 
- The Humberto Vidal Explosion (sometimes also referred to as the Río Piedras Explosion) was a gas explosion that occurred on November 21, 1996 on the Humberto Vidal shoe store located in Río Piedras, Puerto Rico, United States. The explosion killed 33 and wounded 69 others when the building collapsed. It is considered one of the deadliest disasters to have occurred on the island.
- On December 11, 1998, there was a gas explosion in St. Cloud, Minnesota, which killed four people.
- In December 1999, there was a natural gas explosion which completely destroyed one house and severely damaged 4 other houses in Larkhall, South Lanarkshire, it killed the family of 4 that lived in the house that exploded, Transco Gas who are responsible for maintaining the Gas Network were fined £15 million as the cause was found to be a severely corroded gas main directly outside the house.
- On January 17, 2001, natural gas stored underground in Hutchinson, Kansas leaked into empty brine caverns. Two explosions resulted from the leak. One destroyed two businesses and damaged 26 others. Another destroyed a trailer park killing two people. Sinkholes and gas leaks formed all around the city and the gas had to be slowly burned off.
- Arkhangelsk explosion of 2004: In Arkhangelsk, Russia, on March 16, 2004, a gas explosion in an apartment killed 58 people. Reportedly, a former gas technician caused the explosion due to a dispute with his former employers.
- On May 11, 2004, the Stockline Plastics Factory in the Maryhill area of Glasgow was destroyed by a gas explosion. The cause was found by a Health and Safety Executive report to be the ignition of gas from a ruptured pipe. Nine people were killed and 37 were injured, 15 seriously.
- The 2009 Viareggio train derailment, in Versilia, killed 33 people with the explosion of GPL that was contained in one of the train cars.
- August 19, 2000, a natural gas transmission pipeline ruptured and a fire killed 12 campers near Carlsbad, New Mexico.
- September 9, 2010: In San Bruno, California, a suburb of San Francisco, a gas leak and explosion kills four people. 53 homes were burned down and over 120 homes were damaged.
- On February 10, 2011 in Allentown, Pennsylvania a gas explosion kills 5 people and levels a city block. 
- On February 5, 2012 in the State of Washington, Josh Powell kills himself and two sons in a gas explosion at their home.
- August 14, 2012, Brentwood, New York (Suffolk County, New York; Long Island): A suspected gas explosion levels a house, killing a toddler and wounding up to 17 others.
- August 29, 2012, New Milford, Connecticut: An online Associated Press August 29 news article from the Boston Herald stated that, according to the Danbury News-Times, a propane leak explosion killed one man (a friend of the family who lived in the home who was a plumber, who had come over to assist), and severely injured the homeowner and the older child of the deceased friend.
- Richmond Hill explosion: Investigators now confirm that the intentional release of natural gas into a home in the Richmond Hill neighborhood of southern Indianapolis is the cause of the massive explosion Saturday, November 10, 2012, that killed a couple and injured about twenty people. The blast obliterated two houses, caused $4.4 million in preliminary damage estimates, destroyed five other homes, caused major damage to another ten houses, caused minor damage to 11 others, and affected 86 other homes across a range of several blocks. It was so large it registered on IUPUI seismic detectors and was felt for miles. However, on Monday, November 19, 2012, Indianapolis and Indiana state homeland security and police officials announced that a white van, of interest to them, had been seen leaving the area and that a $10,000 reward was being offered, in what is now officially a criminal homicide investigation. Officials confirmed natural gas as the cause of the blast on November 20, 2012, and that the first round of severely damaged homes (not including the four immediately surrounding the blast epicenter) would be demolished during the week of November 26, 2012.
- On November 23, 2012 in Springfield, Massachusetts, a natural gas explosion destroyed two buildings, including one housing a strip club, damaging a total of 42 buildings. Firefighters, police officers and gas company workers were in the area because of an earlier gas leak. The explosion injured a total of 21 people, including 12 of the Firefighters that responded to the gas leak. Astonishingly, there were no deaths relating to the explosion.
- The 2013 Rosario gas explosion in Argentina on 6 August 2013 left 21 dead.
- On March 12, 2014, the East Harlem apartment explosion occurred within two buildings in the East Harlem section of Manhattan in New York City. At least 8 people were killed and more than 70 were injured. 
- Drabek, Thomas (1995-05-18). "Disaster in Aisle 13 Revisited". Retrieved 2008-10-07.
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- Blast Kills 5 in Pennsylvania, http://www.nytimes.com/2011/02/11/us/11allentown.html
- "36 homes critically damaged in explosion in south side neighborhood" (News article and video). The Indy Channel (in English) (Online Article). 12 November 2012. Retrieved 6 July 2014. "Thirty-six homes sustained critical damage in an explosion that killed two people on Indianapolis' south side, inspectors said. The explosion happened Saturday night at a home at 8349 Fieldfare Way in the Richmond Hill subdivision near Sherman Drive between County Line and Stop 11 roads."
- Berry, Connor. "Springfield explosion cause: 'Human error,' Massachusetts fire marshal says". The Republican. Retrieved 26 November 2012.
- José Bordón (August 13, 2013). "Hallan tres cuerpos más y asciende a 21 el número de víctimas en Rosario" [Three more bodies are found, and the bodycount in Rosario rises to 21] (in Spanish). La Nación. Retrieved September 11, 2013.
- 8th body found in ruins of East Harlem buildings - USA Today http://www.usatoday.com/story/news/nation/2014/03/13/east-harlem-explosion-gas-leak-bodies/6363235/