1970 propane vapor cloud explosion in Port Hudson

1970 in Missouri1970 industrial disastersExplosions in 1970Franklin County, MissouriGas explosions in the United States ... and 3 more

Missouri stubsPipeline accidents in the United StatesPropane

The 1970 propane vapor cloud explosion in Port Hudson in Missouri resulted from a propane pipeline break, which led to the formation of a large, dense vapor cloud. Upon ignition, the vapor cloud exploded with tremendous force. Both near- and far-field damage indicate that this explosion may be attributed to the detonation of propane in air with an energy release equivalent to that from about 50 tons of detonating trinitrotoluene (TNT). The violence of the explosion is likely unprecedented. As such, the accident is widely quoted as one of the first, if not the first, confirmed accidental occurrences of an unconfined vapor cloud deflagration that turns into a detonation - a so-called deflagration to detonation transition. The accident represents a "worst-possible" sort of case history for assessment of the hazards of fuel transportation. The accident took place in Port Hudson, Franklin County, Missouri, on December 9, 1970. The pipeline was owned by Phillips Pipeline Company.

Excerpt from the Wikipedia article 1970 propane vapor cloud explosion in Port Hudson (License: CC BY-SA 3.0, Authors).

1970 propane vapor cloud explosion in Port Hudson
Camp Mo-Val Road,

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N 38.41 °	E -91.08 °

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Camp Mo-Val Road

Camp Mo-Val Road

Missouri, United States
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Franklin County, Missouri

Franklin County is located in the U.S. state of Missouri. At the 2020 census, the population was 104,682. Its county seat is Union. The county was organized in 1818 and is named after Founding Father Benjamin Franklin.Franklin County is part of the St. Louis, MO-IL Metropolitan Statistical Area and contains some of the city's exurbs. It is located along the south side of the Missouri River. The county has wineries that are included in the Hermann AVA (American Viticultural Area) and is part of the region known as the Missouri Rhineland, which extends on both sides of the Missouri River.

Union Township, Franklin County, Missouri

Union Township is an inactive township in Franklin County, in the U.S. state of Missouri.Union Township was established in 1866, taking its name from the community of Union, Missouri.

Jeffriesburg, Missouri

Jeffriesburg is an unincorporated community in Franklin County, in the U.S. state of Missouri.

Voss Creek

Voss Creek is a stream in Franklin County in the U.S. state of Missouri. It is a tributary of the Bourbeuse River. The headwaters rise just east of Missouri Route EE (at 38°23′07″N 91°07′39″W) and it flows to the east-southeast passing south of the community of Neier to its confluence with the Bourbeuse about 3 miles (5 km) east of its source (at 38°22′43″N 91°04′26″W). The confluence with the Bourbeuse is about 5 miles (8 km) southwest of Union and 5 miles (8 km) west-northwest of St. Clair.Voss Creek most likely was named after Dietrich Voss, the proprietor of a local mill.

Roth Creek

Roth Creek (also known as Bachelor Creek) is a stream in Franklin County in the U.S. state of Missouri.Roth Creek was named after a local landowner.

Union High School (Missouri)

Union High School is a public high school in Union, Missouri that is part of the Union R-XI School District, which is MSIP-accredited and in 2001-02 and in 2009-10 was awarded Distinction in Performance by the Missouri Department of Education. Aside from its regular course offerings, students also have the opportunity to participate in extracurricular and vocational programs. In vocational offerings, the Union FFA Chapter was honored in 2002 as one of the top 10 FFA Chapters in the United States.

Jordan Branch (Saint Johns Creek tributary)

Jordan Branch (also called Jordan Creek) is a stream in Franklin County in the U.S. state of Missouri. It is a tributary of Saint Johns Creek.The stream headwaters arise at 38°24′46″N 91°08′07″W and it flows north-northeast passing under US Route 50 approximately six miles west of Union. It continues to the north-northeast for approximately two miles to its confluence with Saint Johns Creek at 38°27′58″N 91°06′55″W.Jordan Branch most likely takes its name from the Jordan River, in West Asia.

Union, Missouri

Union is a city in and the county seat of Franklin County, Missouri, United States. It is located on the Bourbeuse River, 50 miles (80 km) southwest of St. Louis. The population was 12,348 at the 2020 census.

KLPW (AM)

KLPW (1220 AM) is a radio station licensed to Union, Missouri, United States. The station airs an Americana music format, and is currently owned by Broadcast Properties, Inc. The station transitioned to its current format from Talk radio in July 2017.

Krakow, Missouri

Krakow is an unincorporated community in Franklin County, in the U.S. state of Missouri. The community is situated on Missouri Route A, between Union to the south and Washington to the north.

Flat Creek (Bourbeuse River tributary)

Flat Creek is a stream in Franklin County in the U.S. state of Missouri. It is a tributary of the Bourbeuse River. Flat Creek is characterized by flat rocks in its bottom, hence the name.

Clover Bottom, Missouri

Clover Bottom is an unincorporated community in Franklin County, in the U.S. state of Missouri. The community is at the intersection of routes YY and AJ approximately 3.5 miles west of Krakow.