Line 10 (Beijing Subway) opened
Line 10 of the Beijing Subway is the second loop line in Beijing's rapid transit network as well as the second longest and most widely used line. The line is 57.024 km (35.4 mi) in length, and runs entirely underground through Haidian, Chaoyang and Fengtai Districts, either directly underneath or just beyond the 3rd Ring Road. Line 10 was the world's longest rapid transit loop line since its completion in May 2013 till March 2023 and one of the longest entirely underground subway lines requiring 104 minutes to complete one full journey in either direction.
Saguenay Flood
The Saguenay flood was a series of flash floods on July 19 and 20, 1996 that hit the Saguenay-Lac-Saint-Jean region of Quebec, Canada. It was the biggest overland flood in 20th-century Canadian history.
Busan Metro opened
The Busan Metro is the urban rail system operated by the Busan Transportation Corporation of Busan, South Korea. The metro network first opened in 1985 with seventeen stations. The Metro itself consists of 4 numbered lines, covering 116.5 kilometres (72.4 mi) of route and serving 114 stations. Including the BGL and the Donghae Line, the network covers 205.6 kilometres (127.8 mi) of route and serving 158 stations).
Val di Stava dam collapse
The Val di Stava Dam collapse occurred on 19 July 1985, when two tailings dams above the village of Stava, near Tesero, Italy, failed. It resulted in one of Italy's worst disasters, killing 268 people, destroying 63 buildings and demolishing eight bridges. The upper dam broke first, leading to the collapse of the lower dam. Around 180,000 cubic metres (6,350,000 ft3) of mud, sand, and water were released into the Rio di Stava valley and toward the village of Stava at a speed of 90 km/h (56 mph). Having crashed through the village, the torrent continued until it reached the Avisio River a further 4.2 km (2.6 mi) away, destroying everything in its path.
Paris Métro opened
The Paris Métro is a rapid transit system in the Paris metropolitan area, France. A symbol of the city, it is known for its density within the capital's territorial limits, uniform architecture and unique entrances influenced by Art Nouveau. The system is 226.9 kilometres (141.0 mi) long, mostly underground. It has 308 stations of which 64 have transfers between lines.
Alexander Dallas Bache was born
Alexander Dallas Bache was an American physicist, scientist, and surveyor who erected coastal fortifications and conducted a detailed survey to map the mideastern United States coastline. Originally an army engineer, he later became Superintendent of the United States Coast Survey, and built it into the foremost scientific institution in the country before the Civil War.
