Question: The New London School explosion killed 295 people, How many died from the Texas City disaster?

Context paragraphs:
Almy, Wyoming: Almy was a coal mining camp in Uinta County, Wyoming, near the town of Evanston.  In 1881 an explosion killed 38 miners in the Central Pacific Mine, marking the first mine explosion west of the Mississippi River.  Another explosion killed 13 in 1886, and a third explosion in Red Canyon in 1895 killed 62 miners, the third worst mining disaster in Wyoming history.  Following the second explosion, the Wyoming territorial legislature established the office of the state mining inspector, which subsequently shut down the Almy mines in the 1940s after it was deemed too dangerous to mine there.

1806 Birgu polverista explosion: The Birgu polverista explosion was the accidental detonation of ammunition in the gunpowder magazine (polverista) of Birgu in the British protectorate of Malta, on 18 July 1806.  The explosion occurred due to negligence while transferring shells from the magazine, and it resulted in the detonation of 40000 lbs of gunpowder.  The explosion killed around 200 people, including British and Maltese military personnel, and Maltese civilians from Birgu.  Parts of the city's fortifications, some naval stores and many houses were destroyed, and the affected area became known as "l-Imġarraf" (Maltese for "the destroyed").

New London School explosion: The New London School explosion occurred on March 18, 1937, when a natural gas leak caused an explosion, destroying the London School of New London, Texas, a community in Rusk County previously known as "London".  The disaster killed more than 295 students and teachers, making it the deadliest school disaster in American history.  s of 2017 , the event is the third deadliest disaster in the history of Texas, after the 1900 Galveston hurricane, and the 1947 Texas City disaster.

2013 Serendra explosion: The 2013 Serendra explosion was an explosion that occurred in the Two Serendra condominium complex occurred in Taguig City, Metro Manila, Philippines.  The explosion killed at least 3 people and another 5 were injured in the area.

Texas City disaster: The Texas City disaster was an industrial accident that occurred April 16, 1947, in the Port of Texas City.  It was the deadliest industrial accident in U.S. history, and one of the largest non-nuclear explosions.  Originating with a mid-morning fire on board the French-registered vessel SS "Grandcamp" (docked in the port), her cargo of approximately 2,200 tons (approximately 2,100 metric tons) of ammonium nitrate detonated, with the initial blast and subsequent chain-reaction of further fires and explosions in other ships and nearby oil-storage facilities.  It killed at least 581 people, including all but one member of the Texas City fire department.  The disaster triggered the first ever class action lawsuit against the United States government, under the then-recently enacted Federal Tort Claims Act (FTCA), on behalf of 8,485 victims.

Out of Darkness (novel): Out of Darkness is a 2015 historical young adult novel by Ashley Hope Pérez.  The novel chronicles a love affair between a teenage Mexican American girl and a teenage African-American boy in 1930s New London, Texas, occurring right up to the 1937 New London School explosion.

1950 CTA Streetcar Crash: The 1950 CTA Streetcar Crash, also known as the Green Hornet Streetcar Disaster, occurred on May 25, 1950, when a Chicago Transit Authority streetcar collided with a gasoline truck.  The resulting explosion killed 34 people and injured 50 others, remaining one of the most deadly public transit disasters in Chicago history.

Texas City Refinery explosion: The Texas City Refinery explosion occurred on March 23, 2005, when a hydrocarbon vapor cloud was ignited and violently exploded at the ISOM isomerization process unit at BP's Texas City refinery in Texas City, Texas, killing 15 workers, injuring more than 180 others and severely damaging the refinery.  The Texas City Refinery was the second-largest oil refinery in the state, and the third-largest in the United States with an input capacity of 437000 oilbbl per day as of January 1, 2000.  BP acquired the Texas county refinery as part of its merger with Amoco in 1999.

City on Fire (1979 film): City on Fire is a 1979 disaster film directed by Alvin Rakoff and featuring an all-star cast.  The film’s plot revolves around a disgruntled employee who sets fire to an oil refinery, setting off a blaze which engulfs an entire city.  People try to either fight the fire or flee as it spreads throughout the city.  Some elements of the disaster depicted reflect the Texas City disaster of 1947.

West Stanley Pit disaster: The West Stanley colliery (variously known as West Stanley pit or Burns pit)was a coal mine near Stanley.  The mine opened in 1832 and was closed in 1936.  Over the years several seams were worked through four shafts: Kettledrum pit, Lamp pit, Mary pit and New pit.  In 1882 an underground explosion killed 13 men and in 1909 another explosion killed 168 men.

Supporting paragraphs: New London School explosion Texas City disaster
Answer: 581