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Oil well Christmas tree. In petroleum and natural gas extraction, a Christmas tree, or tree, is an assembly of valves, casing spools, and fittings used to regulate the flow of pipes in an oil well, gas well, water injection well, water disposal well, gas injection well, condensate well, and other types of well.
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Hazard pictograms form part of the international Globally Harmonized System of Classification and Labelling of Chemicals (GHS). Two sets of pictograms are included within the GHS: one for the labelling of containers and for workplace hazard warnings, and a second for use during the transport of dangerous goods.
The first aluminum trees could not be illuminated in the manner traditional for natural Christmas trees or other artificial trees. Fire safety concerns prevented lights from being strung through the tree's branches; [ 4 ] draping electric lights through an aluminum tree could cause a short circuit . [ 8 ]
Big Tex is a 55-foot (17 m) tall figure and marketing icon of the annual State Fair of Texas held at Fair Park in Dallas, Texas, United States.The figure has become a cultural icon of Dallas and Texas.
Performing a probabilistic risk assessment starts with a set of initiating events that change the state or configuration of the system. [3] An initiating event is an event that starts a reaction, such as the way a spark (initiating event) can start a fire that could lead to other events (intermediate events) such as a tree burning down, and then finally an outcome, for example, the burnt tree ...
Antiaris toxicaria is a tree in the mulberry and fig family, Moraceae.It is the only species currently recognized in the genus Antiaris.The genus Antiaris was at one time considered to consist of several species, but is now regarded as just one variable species which can be further divided into five subspecies.
San Antonio (/ ˌ s æ n æ n ˈ t oʊ n i oʊ / SAN an-TOH-nee-oh; Spanish for "Saint Anthony") is a city in the U.S. state of Texas and the most populous city in Greater San Antonio, the third-largest metropolitan area in Texas and the 24th-largest metropolitan area in the United States at 2.6 million people in the 2020 U.S. census. [12]
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