Ammonium nitrate disasters
Encyclopedia
Ammonium nitrate decomposes into gas
Gas
Gas is one of the three classical states of matter . Near absolute zero, a substance exists as a solid. As heat is added to this substance it melts into a liquid at its melting point , boils into a gas at its boiling point, and if heated high enough would enter a plasma state in which the electrons...

es including oxygen
Oxygen
Oxygen is the element with atomic number 8 and represented by the symbol O. Its name derives from the Greek roots ὀξύς and -γενής , because at the time of naming, it was mistakenly thought that all acids required oxygen in their composition...

 when heated (non-explosive reaction); however, ammonium nitrate can be induced to decompose explosively by detonation
Detonation
Detonation involves a supersonic exothermic front accelerating through a medium that eventually drives a shock front propagating directly in front of it. Detonations are observed in both conventional solid and liquid explosives, as well as in reactive gases...

. Large stockpiles of the material can be a major fire
Conflagration
A conflagration or a blaze is an uncontrolled burning that threatens human life, health, or property. A conflagration can be accidentally begun, naturally caused , or intentionally created . Arson can be accomplished for the purpose of sabotage or diversion, and also can be the consequence of...

 risk due to their supporting oxidation, and may also detonate, as happened in the Texas City disaster
Texas City Disaster
The Texas City Disaster was the deadliest industrial accident in U.S. history. The incident took place on April 16, 1947, and began with a mid-morning fire on board the French-registered vessel SS Grandcamp which was docked in the Port of Texas City...

 of 1947, which led to major changes in the regulations for storage and handling.

There are two major classes of incidents resulting in explosions:
  • In the first case, the explosion happens by the mechanism of shock to detonation transition. The initiation happens by an explosive charge going off in the mass, by the detonation of a shell thrown into the mass, or by detonation of an explosive mixture in contact with the mass. The examples are Kriewald, Morgan, Oppau
    Oppau explosion
    The Oppau explosion occurred on September 21, 1921 when a tower silo storing 4,500 tonnes of a mixture of ammonium sulfate and ammonium nitrate fertilizer exploded at a BASF plant in Oppau, now part of Ludwigshafen, Germany, killing 500–600 people and injuring about 2,000 more.The plant began...

    , Tessenderlo
    Tessenderlo
    Tessenderlo is a municipality located in the Belgian province of Limburg. It is where the three Belgian provinces of Limburg, Flemish Brabant and Antwerp meet at the front gate of the Averbode Abbey. The municipality Tessenderlo encompasses the villages of Tessenderlo proper, Schoot, Engsbergen,...

     and Traskwood.
  • In the second case, the explosion results from a fire that spreads into the ammonium nitrate (AN) itself (Texas City
    Texas City Disaster
    The Texas City Disaster was the deadliest industrial accident in U.S. history. The incident took place on April 16, 1947, and began with a mid-morning fire on board the French-registered vessel SS Grandcamp which was docked in the Port of Texas City...

    , Brest
    Brest, France
    Brest is a city in the Finistère department in Brittany in northwestern France. Located in a sheltered position not far from the western tip of the Breton peninsula, and the western extremity of metropolitan France, Brest is an important harbour and the second French military port after Toulon...

    , Oakdale
    Oakdale
    -United Kingdom:*Oakdale, Caerphilly*Oakdale, Dorset*Oakdale, North Yorkshire*Oakdale, Surrey-United States:* Oakdale, California* Oakdale, Connecticut* Oakdale, Illinois* Oakdale, Iowa* Oakdale, Louisiana...

    ), or to a mixture of an ammonium nitrate with a combustible material during the fire (Repauno, Cherokee). The fire must be confined at least to a degree for successful transition from a fire to an explosion (a phenomenon known as "transition from a decomposition or deflagration", or DDT). Pure, compact AN is stable and very difficult to initiate. However, there are numerous cases when even impure AN did not explode in a fire.


Ammonium nitrate decomposes in temperatures above 210 °C. Pure AN is stable and will stop decomposing once the heat source is removed, but when catalysts are present (combustible materials, acids, metal ions, chlorides. ..) the reaction can become self-sustaining (known as self-sustaining decomposition, SSD). This is a well-known hazard with some types of NPK fertilisers, and is responsible for the loss of several cargo ships.

Morgan, New Jersey, 1918 (Now Sayreville
Sayreville, New Jersey
Sayreville is a borough located on the Raritan River, near Raritan Bay in Middlesex County, New Jersey, United States. As of the 2010 United States Census, the borough population was 42,704....

)

On October 4, 1918, an explosion at the Morgan Depot occurred leading to many artillery shells being launched into the air, some of which landed on a neighbouring warehouse where 4000 tonne
Tonne
The tonne, known as the metric ton in the US , often put pleonastically as "metric tonne" to avoid confusion with ton, is a metric system unit of mass equal to 1000 kilograms. The tonne is not an International System of Units unit, but is accepted for use with the SI...

s of ammonium nitrate were stored in barrels. One of the shells caused a large explosion, but the majority of the ammonium nitrate did not detonate.

Kriewald, Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

, 1921

On July 26, 1921 in this railway town
Railway town
A railway town is a settlement that originated or was greatly developed because of a railway station or junction at its site.In Victorian Britain, the spread of railways greatly affected the fate of many small towns...

 (now in Poland
Poland
Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

) workers tried to dislodge 30 tonnes of ammonium nitrate which had aggregated (solidified into one mass) in two wagons. When mining explosives were used on this solid mass the wagons exploded and killed nineteen people.

Oppau
Oppau
Oppau may refer to* Ludwigshafen-Oppau, a suburb of Ludwigshafen, Germany** the Oppau explosion which occurred there in 1921* until 1945, Opawa, Lower Silesian Voivodeship, Poland...

, Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

, 1921

Another attempt at disaggregation of a fertilizer mix with industrial explosives caused the death of 450 people and the destruction of 700 houses on September 21, 1921. The fertilizer was a 50:50 mixture of ammonium nitrate and ammonium sulfate
Ammonium sulfate
Ammonium sulfate , 2SO4, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. It contains 21% nitrogen as ammonium cations, and 24% sulfur as sulfate anions...

 and the factory had used this method of disaggregation over 20,000 times without incident. It is thought that, on this occasion, poor mixing had led to certain parts of the mass to contain more ammonium nitrate than others. Only 450 tonnes exploded, out of 4500 tonnes of fertilizer stored in the warehouse.

Nixon, New Jersey
New Jersey
New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

, 1924 (Now Edison Township
Edison, New Jersey
Edison Township is a township in Middlesex County, New Jersey. What is now Edison Township was originally incorporated as Raritan Township by an Act of the New Jersey Legislature on March 17, 1870, from portions of both Piscataway Township and Woodbridge Township...

)

On March 1, 1924, a fire and several large explosions destroyed a warehouse containing ammonium nitrate at the Nixon Nitration Works. The explosiveness of the product was perhaps enhanced, as it had been prepared using nitric acid
Nitric acid
Nitric acid , also known as aqua fortis and spirit of nitre, is a highly corrosive and toxic strong acid.Colorless when pure, older samples tend to acquire a yellow cast due to the accumulation of oxides of nitrogen. If the solution contains more than 86% nitric acid, it is referred to as fuming...

 which had previously been used for the production of TNT.

Muscle Shoals, Alabama
Muscle Shoals, Alabama
Muscle Shoals is a city in Colbert County, Alabama, United States. As of 2007, the United States Census Bureau estimated the population of the city to be 12,846. The city is included in The Shoals MSA. It is famous for its contributions to American popular music.-Geography:Muscle Shoals is located...

, 1925

On April 4, 1925, and May 3, 1925, two carloads, each containing 220 barrels of ammonium nitrate, were dispatched from Muscle Shoals, Alabama
Muscle Shoals, Alabama
Muscle Shoals is a city in Colbert County, Alabama, United States. As of 2007, the United States Census Bureau estimated the population of the city to be 12,846. The city is included in The Shoals MSA. It is famous for its contributions to American popular music.-Geography:Muscle Shoals is located...

 and caught fire in transportation. The barrels had been stored in a warehouse with varying humidity for 6 years, so it is believed that they were ignited by friction with their nitrate-impregnated manila paper lining. Other shipments were reportedly more successful.

Rouen
Rouen
Rouen , in northern France on the River Seine, is the capital of the Haute-Normandie region and the historic capital city of Normandy. Once one of the largest and most prosperous cities of medieval Europe , it was the seat of the Exchequer of Normandy in the Middle Ages...

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, 1940

During a bombing raid on June 5, 1940, a bomb exploded in a warehouse containing ammonium nitrate: the fertilizer was dispersed around the crater, but did not explode.

Miramas
Miramas
Miramas is a commune in the Bouches-du-Rhône department in the Provence-Alpes-Côte d'Azur region in southern France. It is the second-largest commune in metropolitan Ouest-Provence and is located at the north end of the Étang de Berre lagoon, adjacent to and northeast of the city of Istres.-Circuit...

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, 1940

August 5, 1940: 240 tonnes of ammonium nitrate in sacks exploded after being hit by a shell from a nearby fire in a munitions train.

Tessenderlo
Tessenderlo
Tessenderlo is a municipality located in the Belgian province of Limburg. It is where the three Belgian provinces of Limburg, Flemish Brabant and Antwerp meet at the front gate of the Averbode Abbey. The municipality Tessenderlo encompasses the villages of Tessenderlo proper, Schoot, Engsbergen,...

, Belgium
Belgium
Belgium , officially the Kingdom of Belgium, is a federal state in Western Europe. It is a founding member of the European Union and hosts the EU's headquarters, and those of several other major international organisations such as NATO.Belgium is also a member of, or affiliated to, many...

, 1942

Another attempt to disaggregate a pile of 150 tonnes of ammonium nitrate with industrial explosives ended tragically on April 29, 1942: several hundred people were killed.

Texas City, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, 1947

The cargo ship Grandcamp was being loaded on April 16, 1947 when a fire was detected in the hold: at this point, 2600 tonnes of ammonium nitrate in sacks were already aboard. The captain responded by closing the hold and pumping in pressurised steam. One hour later, the ship exploded, killing several hundred people and setting fire to another vessel, the High Flyer, which was moored 250 metres away and which contained 1050 tonnes of sulfur
Sulfur
Sulfur or sulphur is the chemical element with atomic number 16. In the periodic table it is represented by the symbol S. It is an abundant, multivalent non-metal. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S8. Elemental sulfur is a bright yellow...

 and 960 tons of ammonium nitrate. The Grandcamp explosion also created a powerful earthshock and knocked two small planes flying at 1500 feet (457.2 m) out of the sky. The High Flyer exploded the next day, after having burned for sixteen hours. 500 tonnes of ammonium nitrate on the quayside also burned, but without exploding, probably because it was less tightly packed.

Brest
Brest, France
Brest is a city in the Finistère department in Brittany in northwestern France. Located in a sheltered position not far from the western tip of the Breton peninsula, and the western extremity of metropolitan France, Brest is an important harbour and the second French military port after Toulon...

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, 1947

The cargo ship Ocean Liberty was loaded with 3300 tonnes of ammonium nitrate and various inflammable products when it caught fire at 12:30 July 28, 1947. The captain ordered the hold to be sealed and pressurised steam was pumped in. As this did not stop the fire, the vessel was towed out of the harbour at 14:00, and exploded at 17:00. The explosion caused 29 deaths and serious damage to the port of Brest.

Red Sea
Red Sea
The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez...

, 1954

A fire was detected on the cargo ship Tirrenia on January 23, 1954, while it was carrying 4000 tonnes of ammonium nitrate. Attempts to extinguish the fire with steam were unsuccessful, and the ship was abandoned before it exploded later in the night.

Roseburg, Oregon
Roseburg, Oregon
Roseburg is a city in the U.S. state of Oregon. It is the county seat of Douglas County. The population was 21,181 at the 2010 census.-History:...

, 1959

A truck carrying dynamite and ammonium nitrate caught fire early in the morning of August 7, 1959. When it exploded it killed 14 people and injured 125 more. Several blocks of downtown Roseburg were destroyed. The accident is locally referred to as "The Blast."

Traskwood, Arkansas
Arkansas
Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River...

, 1960

  • On December 17, 1960, a 96 freightcar train suffered partial derailment in which the last 23 cars were derailed. The derailed cars included: four fuel oil tank cars, two tank cars of gasoline, three tank cars of petroleum oil, four cars of lube oil drums, three cars of liquid fertilizer, one car of fuming nitric acid and two cars of fertilizer grade ammonium nitrate. In this particular accident, neither car of ammonium nitrate exploded. However, the nitric acid reacted with the fuel oil, essentially creating ANFO
    ANFO
    ANFO is a widely used bulk industrial explosive mixture. It consists of 94 percent porous prilled ammonium nitrate , that acts as the oxidizing agent and absorbent for the fuel — six percent Number 2 Fuel Oil...

     to feed the conflagration, resulting in the spread of the ammonium nitrate material around the incident site.

Kansas City, Missouri
Kansas City, Missouri
Kansas City, Missouri is the largest city in the U.S. state of Missouri and is the anchor city of the Kansas City Metropolitan Area, the second largest metropolitan area in Missouri. It encompasses in parts of Jackson, Clay, Cass, and Platte counties...

, 1988

On November 29, 1988, at 4:07 AM two trailers containing approximately 50000 lb (22,679.6 kg) of ammonium nitrate exploded at a construction site located near the 87th street exit of Highway 71 in Kansas City, Missouri
Kansas City, Missouri
Kansas City, Missouri is the largest city in the U.S. state of Missouri and is the anchor city of the Kansas City Metropolitan Area, the second largest metropolitan area in Missouri. It encompasses in parts of Jackson, Clay, Cass, and Platte counties...

. The explosives were to be used in the blasting of rock while constructing Highway 71. The result of the explosions were the deaths of six firemen from the Kansas City Fire Department's Pumper Companies 30 and 41. Both companies were dispatched after 911 calls indicated that a fire had been set to a pickup truck located near the trailers. The responding companies were warned that there were explosives on-site; however, they were unaware that the trailers were essentially magazines filled with explosives. At 4:07 AM one of the "magazines" caught fire and a catastrophic explosion occurred, killing all six firemen instantly — only sparing remains were found. A second blast occurred 40 minutes later, although all fire crews had been pulled back at this time. The blasts created two craters, each approximately 100 feet (30.5 m) wide and 8 feet (2.4 m) deep. The explosions also shattered windows within a 10 miles (16.1 km) area and could be heard 40 miles (64.4 km) away. It was later determined that the explosions were acts of arson
Arson
Arson is the crime of intentionally or maliciously setting fire to structures or wildland areas. It may be distinguished from other causes such as spontaneous combustion and natural wildfires...

, set by individuals embroiled in a labor dispute with the construction company contracted to build the highway.

Papua New Guinea
Porgera Gold Mine
The Porgera Gold Mine is a large gold and silver mining operation in Enga province, Papua New Guinea , located at the head of the Porgera Valley. The mine is situated in the rain forest covered highlands at an altitude of 2,200 to 2,700 m, in a region of high rainfall, landslides, and frequent...

, 1994

At 9:45 am, 2 August 1994, 11 workers were killed when the sensitised AN emulsion plant they were working on exploded at the Porgera Gold Mine
Porgera Gold Mine
The Porgera Gold Mine is a large gold and silver mining operation in Enga province, Papua New Guinea , located at the head of the Porgera Valley. The mine is situated in the rain forest covered highlands at an altitude of 2,200 to 2,700 m, in a region of high rainfall, landslides, and frequent...

. The fatal explosion involved at most a few tonnes of explosive. A larger explosion of about 80 tonnes of emulsion (Ammonium Nitrate Emulsion, ANE, UN 3375) was caused by fires under storage facilities at the site at 11:02 am. There were no fatalities in the second explosion because the site had been evacuated. A mushroom cloud was seen to rise.

ANE is an emulsion of ammonium nitrate, fuel and water.

Port Neal, Iowa
Sergeant Bluff, Iowa
As of the census of 2000, there were 3,321 people, 1,137 households, and 891 families residing in the city. The population density was 1,668.7 people per square mile . There were 1,176 housing units at an average density of 590.9 per square mile...

, 1994

At about 6:13am on December 13, 1994, two explosions rocked the Port Neal, Iowa ammonium nitrate processing plant operated by Terra Industries. Four people were killed and 18 injured. Approximately 5,700 tons of anhydrous ammonia were released and releases of ammonia continued for six days after the explosions. Groundwater under the processing plant was contaminated by chemicals released as a result of the blast. The timing of the explosion occurred prior to the start of the arrival of the 8:00am shift personnel, or the death toll may have been larger.

Toulouse
Toulouse
Toulouse is a city in the Haute-Garonne department in southwestern FranceIt lies on the banks of the River Garonne, 590 km away from Paris and half-way between the Atlantic Ocean and the Mediterranean Sea...

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, 2001

On September 21, 2001, at 10:15 AM, in the AZF (factory) (Azote de France) fertiliser factory in Toulouse
Toulouse
Toulouse is a city in the Haute-Garonne department in southwestern FranceIt lies on the banks of the River Garonne, 590 km away from Paris and half-way between the Atlantic Ocean and the Mediterranean Sea...

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, an explosion occurred in a warehouse where the off-specification granular AN was stored flat, separated by partitions. About 200–300 tons is said to be involved in the explosion, resulting in 31 people dead and 2,442 injured, 34 of them seriously. The blast wave shattered windows up to 3 kilometres away and the resulting crater was 10 metres deep and 50 metres wide. The exact cause remains unknown. The material damage was estimated at 2.3 billion
1000000000 (number)
1,000,000,000 is the natural number following 999,999,999 and preceding 1,000,000,001.In scientific notation, it is written as 109....

 euro
Euro
The euro is the official currency of the eurozone: 17 of the 27 member states of the European Union. It is also the currency used by the Institutions of the European Union. The eurozone consists of Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg,...

s.

Cartagena, Murcia, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

, 2003

The fertilizer storage facility of Fertiberia held a self sustained decomposition (SSD) fire in January 2003. The fire was controlled after most of the material was removed by mechanical means.

Barracas
Barracas
Barracas is a barrio, or district, in the southeast part of the city of Buenos Aires, Argentina. It is located between the railroad of Ferrocarril General Manuel Belgrano and the Riachuelo River, and the streets Regimiento de Patricios, Defensa, Caseros, Vélez Sársfield, Amancio Alcorta, Lafayette,...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

, 2004

A truck carrying 25 tonnes of ammonium nitrate fertilizer exploded half an hour after a traffic accident on March 9, 2004, killing two people and injuring three others. The explosion, which could be heard at a distance of 10 km (6.2 mi) caused a crater five metres deep.

Mihăileşti, Buzău
Mihailesti, Buzau
Mihăileşti is a commune in Buzău County, Romania. It is composed of four villages: Colţăneni, Mărgineanu, Mihăileşti and Satu Nou....

, Romania
Romania
Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

, 2004

A truck carrying 20 tones of ammonium nitrate tipped over on the European road E85 near Mihăileşti at 4:57 AM on May 24, 2004. Shortly afterwards, a fire started in the cabin. Two reporters got to the site of the accident and started filming while firemen were trying to stop the fire. Around 5.50 AM the truck exploded, killing 18 and wounding 13 people. A crater 6.5 meters deep and 42 meters in diameter was formed by the explosion.

Ryongchŏn
Ryongchon
Ryongch'ŏn is a kun in North P'yǒngan Province, North Korea, at the mouth of the Yalu River. The county seat is Ryongchŏn-ŭp, about from the border with China...

, North Korea
North Korea
The Democratic People’s Republic of Korea , , is a country in East Asia, occupying the northern half of the Korean Peninsula. Its capital and largest city is Pyongyang. The Korean Demilitarized Zone serves as the buffer zone between North Korea and South Korea...

, 2004

A freight train carrying ammonium nitrate exploded in this important railway town near the Chinese
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 border on April 22, 2004, killing 162 people and injuring over 3000 others. The station was destroyed, as were most buildings within 500 metres, and nearly 8000 homes were destroyed or damaged. Two craters of about ten metres in depth were seen at the site of the explosion. The authorities blamed "human error" for the explosion, although rumours persist that it was in fact an attempt to assassinate the Korean leader Kim Jong-Il
Kim Jong-il
Kim Jong-il, also written as Kim Jong Il, birth name Yuri Irsenovich Kim born 16 February 1941 or 16 February 1942 , is the Supreme Leader of the Democratic People's Republic of Korea...

, who was due to be passing through the station at the time.

Estaca de Bares, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

, 2007

The NPK fertilizer cargo of the ship Ostedijk
Ostedijk
The Ostedijk is a Dutch cargo ship that sent out a distress call on 17 February 2007 when it was about 20 km off the northwestern tip of Spain...

 sustained a self sustained decomposition (SSD) fire for 11 days. The fire plume reached 10 m in diameter and several hundred meters in length. Special water spears were inserted inside the cargo to extinguish the fire.

Monclova, Coahuila, Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

, 2007

On September 10, 2007 near Monclova, Coahuila, México, a trailer loaded with 22 tons of ammonium nitrate crashed into a truck leaving three dead in the crash. A fire then started in the trailer's cabin and approximately 40 minutes after that, a huge explosion occurred, resulting in around 150 people injured and 37 more dead. A crater 30 ft (9.1 m) wide and 6 ft (1.8 m) deep was created due to the explosion.

Bryan, TX, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, 2009

A plant in Bryan, TX (El Dorado Chemical Company) which processes ammonium nitrate into fertilizer, caught fire at about 11:40 am on July 30, 2009. Over 80,000 residents in the Bryan/College Station area were asked to evacuate south of town due to the toxic fumes this fire generated. Texas A&M University provided shelter at Reed Arena, a local venue on campus. Only minor injuries were reported.
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