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Highly Toxic: a gas that has a LC 50 in air of 200 ppm or less. [2] NFPA 704: Materials that, under emergency conditions, can cause serious or permanent injury are given a Health Hazard rating of 3. Their acute inhalation toxicity corresponds to those vapors or gases having LC 50 values greater than 1,000 ppm but less than or equal to 3,000 ppm ...
Chronic fatigue and memory loss were reported to last up to three years after exposure. In the years following World War One, there were many conferences held in attempts to abolish the use of chemical weapons altogether, such as the Washington Naval Conference (1921–22), Geneva Conference (1923–25) and the World Disarmament Conference (1933
2 January 2021 Afghanistan: Kabul: 5 Unknown A gas cylinder exploded near a bakery. [132] 10 January 2021 China: Qixia: 10 11 Qixia gold mine accident – A gold mine exploded and collapsed. [133] 20 January 2021 Spain: Madrid: 4 10 2021 Madrid explosion – A gas explosion severely damaged a building. [134] 21 January 2021 India: Shivamogga: 8 ...
This is a list of accidents and disasters by death toll. It shows the number of fatalities associated with various explosions , structural fires , flood disasters , coal mine disasters , and other notable accidents caused by negligence connected to improper architecture , planning , construction , design , and more.
Chemical warfare (CW) involves using the toxic properties of chemical substances as weapons.This type of warfare is distinct from nuclear warfare, biological warfare and radiological warfare, which together make up CBRN, the military acronym for chemical, biological, radiological, and nuclear (warfare or weapons), all of which are considered "weapons of mass destruction" (WMDs), a term that ...
This is a list of gases at standard conditions, which means substances that boil or sublime at or below 25 °C (77 °F) and 1 atm pressure and are reasonably stable. List [ edit ]
On August 2, 2021, 3,000 residents had to evacuate a 300-metre (980 ft) radius of the discovery site of a 250 kg (550 lb) unexploded bomb in Borsigplatz area of Dortmund. [167] On October 29, 2021, a five-year-old boy discovered a British hand grenade from World War II on the playground of his kindergarten "An der Beverbäke" in Oldenburg.
This list of military engagements of World War I covers terrestrial, maritime, and aerial conflicts, including campaigns, operations, defensive positions, and sieges. Campaigns generally refer to broader strategic operations conducted over a large bit of territory and over a long period of time.