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For blast furnaces, direct reduction corresponds to the reduction of oxides by the carbon in the coke. However, in practice, direct reduction only plays a significant role in the final stage of iron reduction in a blast furnace, by helping to reduce wustite (FeO) to iron. In this case, the chemical reaction can be trivially described as follows ...
The blast (estimated yield of 20–40 tons of TNT, comparable in scale to the military test Operation Blowdown) was heard 80 km away (50 miles) and registered 3.4 on the Richter magnitude scale. It damaged about 30,000 buildings over about two-thirds of the city, for an estimated total cost of about €2 billion.
1.3 Fire, minor blast: 1.3C Smokeless powder, rocket motors 1.3F Fuzed hand grenades 1.3G Display Fireworks, smoke grenades, flares 1.3H 1.3J 1.3K 1.3L Hypergolic fuelled rocket motors 1.4 Minor hazard: 1.4B Blasting Caps 1.4C Model rocket motors 1.4D Det. Cord 1.4E 1.4F 1.4G Consumer Fireworks, Proximate Pyro 1.4S
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion.The ton of TNT is a unit of energy defined by convention to be 4.184 gigajoules (1 gigacalorie), [1] which is the approximate energy released in the detonation of a metric ton (1,000 kilograms) of TNT.
Nizhny Novgorod Kremlin eternal flame memorializing losses during World War II .. An eternal flame is a flame, lamp or torch that burns for an indefinite time. Most eternal flames are ignited and tended intentionally, but some are natural phenomena caused by natural gas leaks, peat fires and coal seam fires, all of which can be initially ignited by lightning, piezoelectricity or human activity ...
On February 11, 2011, Ira Glass said on his PRI radio show, This American Life, that his staffers had found a recipe in "Everett Beal's Recipe Book", reproduced in the February 28, 1979 issue of The Atlanta Journal-Constitution, that they believed was either Pemberton's original formula for Coca-Cola or a version that he made either before or ...
Furnace Creek holds the record for the most consecutive days above 120 °F (49 °C): 43 days, from July 6 through August 17, 1917. [12] The average temperature of July 2018 was 108.1 °F (42.3 °C), which is the highest temperature of any month for any place in the world.
The ICE 1 is the first batch-produced German high-speed train and one of six in the Intercity Express family. Revenue service at speeds up to 250 km/h (155 mph) started in 1991.