Veja esse tópico específico: 701.4 Continuous Integration and Continuous Delivery (weight: 5), especialmente o assunto:

• Understand how Jenkins models continuous delivery pipelines and implement a declarative continuous delivery pipeline in Jenkins

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A ditching machine is used for digging ditches or trenches of a specified depth and width. These ditches are often used for irrigation, drainage, or pipe-laying. They could also be used to build fences or fortifications. These machines can also be used to excavate for any other purpose (Edwards, 1888). Within the Berger Inquiry, the Banister Model 710 and Model 812 wheel ditchers are discussed. This machine was designed and built by Banister Pipelines of Edmonton, Alberta. Banister Pipelines built their first ditcher, the Model 508, in 1965. The Model 508 was designed to “cut through frozen ground.” Banister Pipelines was later able to “develop the technology in the 1970s that led to some of the largest ditchers ever built.” They designed a prototype of the Model 710 in 1972 which was tested to cut through frozen ground. This machine weighs 115 tons and can dig a ditch 7 feet wide and 10 feet deep. It is powered by two Caterpillar diesel engines which produce 1,120 horsepower. This machine is so powerful that in thawed ground it can reach a production rate of up to 20 feet of trench per minute. A few years later, in 1978, Banister Pipelines built a larger ditching machine, the Model 812, which is almost twice the size of the Model 710. This machine can dig 12 feet deep. The Model 710 and Model 812 by Banister Pipelines are still in use today (Haddock, 1998). 

References

Edwards, C. C. (1888, December 18). Ditching-Machine. Retrieved from The Portal to Texas History: https://texashistory.unt.edu/ark:/67531/metapth171924/ Haddock, K. (1998). Giant Earthmovers: An Illustrated History. Osceola: MBI.

Gov. Robert Bentley issued an executive order Thursday declaring a state of emergency in Alabama over concerns about fuel shortages in the wake of a gasoline pipeline spill that released about 250,000 gallons of gasoline south of Birmingham and shut down a major pipeline connecting refineries in Houston with the rest of the country.

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U.S. EPA personnel at the site of the spill in Shelby County say local residents are not in danger, and the spilled gasoline appears to be contained at the site and unlikely to enter the nearby Cahaba River, which is home to a number of endangered species and other sensitive wildlife.