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3rd century BC – 2nd century BC: Blast furnace in Ancient China: The earliest discovered blast furnaces in China date to the 3rd and 2nd centuries BC, although most sites are from the later Han dynasty. [237] [267] The earliest fore-and-aft rigs, spritsails, appeared in the 2nd century BC in the Aegean Sea on small Greek craft. [268]
[1] Experimentation showed that a temperature of 600°F reduced fuel consumption to a third of that with cold blast, and enabled raw coal to be used instead of coke , with a further cost saving. It also enabled the exploitation of black band ironstone , the use of which had previously proved unprofitable.
In total, 168 people were killed and hundreds more injured. One-third of the building was destroyed by the explosion, [77] which created a 30-foot-wide (9.1 m), 8-foot-deep (2.4 m) crater on NW 5th Street next to the building. [78] The blast destroyed or damaged 324 buildings within a four-block radius, and shattered glass in 258 nearby buildings.
Excavations began in late 2021 "with the goal of understanding the context of the gun and exposing additional evidence of the Spanish settlement," wrote the study's authors, Deni J. Seymour and ...
Coffee beans are hitting record high prices not seen in nearly 50 years after difficult growing seasons among some of the world's top producing regions. Earlier this week, the Wall Street Journal ...
In 1939 both Britain and France had expressed interest in securing Belgium's uranium inventory but no action was taken. [10] 1940 - June - The French Third Republic collapses during the Battle of France. The rapid military collapse would contribute to nearly universal French public support for a nuclear deterrent in later years. [11]
Move over, Wordle and Connections—there's a new NYT word game in town! The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity fans can find on ...
Tasks included blast geometry, seismic measurements, and throwout distribution, pressure measurements, and other cratering phenomena. Suffield 1960 Suffield 18 Aug 1960 Suffield Experimental Station, Alberta Canada 40,000 1 TNT, Tetryol booster Surface 0 Measure blast effects, including outgoing shock and blast waves and various ground effects.