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Espérance-Longdoz

Espérance-Longdoz is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Espérance-Longdoz rather than just read about it. In short: Espérance-Longdoz was a coal mining and steel production company located in the Liège region of Belgium. The company merged with Cockerill-Ougrée-Providence in 1970 to form Cockerill-Ougrée-Providence-Espérance Longdoz (known as Cockerill), later being merged into Usinor, then Arcelor then ArcelorMittal.

Espérance-Longdoz — main illustration
Espérance-Longdoz — illustration

Key takeaways

  • Espérance-Longdoz belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Espérance-Longdoz to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Espérance-Longdoz from memory before moving on to harder problems.

Reference excerpt

Espérance-Longdoz was a coal mining and steel production company located in the Liège region of Belgium. The company merged with Cockerill-Ougrée-Providence in 1970 to form Cockerill-Ougrée-Providence-Espérance Longdoz (known as Cockerill), later being merged into Usinor, then Arcelor then ArcelorMittal. Production at Longdoz ceased in the latter part of the 20th century, the factory site was redevelopend in the 2000s into a shopping complex Médiacité, one part of the buildings at Longdoz has been preserved and is now the home of an industrial museum La Maison de la Métallurgie et de l'Industrie de Liège. A later steelworks development, built at Chertal in the 1960s is still in operation (as of 2010) and is part of the ArcelorMittal group, within the Liège division.

History In 1845/6 the Dothée brothers established a tinplate factory in Longdoz in Liège Province, then in 1862/3 the Dothée brothers merged their business with the Société anonyme des Hauts Fourneaux, Usines et Charbonnages de l'Espérance (founded 1836) forming the Société des Charbonnages, Hauts Fourneaux et Laminoirs de l'Espérance. In 1877 the company disposed of the coal mining business of the company and became the Société métallurgique d'Espérance-Longdoz. The innovation of hot-dip galvanizing was introduced in 1881 by Paul Borgnet who later founded the Phenix Works in Flémalle in 1911. In 1920 Evence Coppée & Cie. acquired the company. The company became the largest Belgian producer of sheet metal, reaching a peak production of 142,000 tonnes in 1948. The plant in Longdoz, however was hemmed in by the city, and could not expand. After 1957 the Longdoz plant ceased hot rolling of steel, and was used only for finishing of the plate, and distribution. In 1960 the company formed, in joint venture with Allegheny Ludlum, a new stainless steel producer: Allegheny-Longdoz (ALZ) in Genk, Flanders. In 1963 a new plant was built on a greenfield site at a reclaimed floodplain island site at Chertal, with a capacity of 1.6 million tonnes of steel produced by the Linz-Donawitz process. Without primary iron production the plant was supplied from the works 22 km away Seraing by torpedo wagons. The company was sold by Evence Coppée & Cie. to Cockerill-Ougrée-Providence in 1970, merging to form Cockerill-Ougrée-Providence et Espérance Longdoz (abbr. Cockerill), and later became part of Cockerill-Sambre, Usinor, and ultimately Arcelor and ArcelorMittal though the mergers of its parent companies.

Fate

Longdoz In 2006 the land occupied by the disused steelworks at Longdoz was authorised to be used to create a shopping and leisure complex known as Médiacité. The BREEAM accredited complex opened 20 October 2009. One part of the steelworks remains, the museum La Maison de la Métallurgie et de l'Industrie de Liège; originally opened in 1963 when production was moved to Chertal, in 1971 the collection was expanded by the addition of relics from the Cockerill company. In 1976 the museum was donated to the city of Liège. The museum contains the reconstruction of the earliest Belgian blast furnace, 19th century steam engines and steam driven machinery, as well as other historically important industrial inventions, including the second prototype dynamo of Zénobe Gramme (1871) and a Herman Hollerith Tabulating machine (1889),

Chertal

50.690272°N 5.659527°E / 50.690272; 5.659527 (Chertal steelworks) Production at the Chertal site continued through Cockerill, Cockerill-Sambre, Arcelor, and ArcelorMittal ownership. The facilities became part of the ArcelorMittal Liège division. Hot rolling briefly stopped in from May to April 2009 due to the economic downturn caused by the 2008 financial crisis. The steel plant was supplied by rail using 130t capacity torpedo wagons. The plant had three LD converters, facilities for iron desulphurisation and vacuum treatment. Production is by continuous casting with a capacity of 3.5million tonnes pa, the primary product is hot rolled steel coil up to 2m wide. In October 2011 ArcelorMittal announced the closure of liquid steel ("hot phase") production at its Liège division, including blast furnaces in Seraing and part of the plant at Chertal. As of 2012 in Chertal only the Hot Strip Mill is still working. It is supplied with slabs coming from other ArcelorMittal production sites. Its future is uncertain.

Notes

References

Video

Sources Pasleau, Suzanne (2002–2003), "Caractéristiques des bassins industriels dans l'Eurégio Meuse-Rhin", Fédéralisme Régionalisme (in French), 3, archived from the original on 1 March 2012 Mommen, André (1994), The Belgian economy in the twentieth century, Routledge, ISBN 9780415019361

Literature Léon Willem, 450 Ans d'Espérance. La S.A. Métallurgique d'Espérance-Longdoz de 1519 à 1969 (in French), ISBN 9782871140481 De Posson, A. (1964), Chertal : Birth of a New Steel Mill on the European Scale, Ministère des affaires étrangères et du commerce extérieur, Services de l'information

External links La Maison de la Métallurgie et de l'Industrie de Liège - official museum site

Illustrations

Espérance-Longdoz illustration
Espérance-Longdoz: Infrabel railway line 214 for Chertal, branches from line 40 (Liège to Maastricht)
Infrabel railway line 214 for Chertal, branches from line 40 (Liège to Maastricht)

Worked examples

Example 1 — a first encounter with Espérance-Longdoz

Start with the simplest possible case. Write down what Espérance-Longdoz claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Espérance-Longdoz before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Espérance-Longdoz ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Espérance-Longdoz

In research
Espérance-Longdoz appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Espérance-Longdoz in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Espérance-Longdoz is common in secondary-school and first-year university syllabi. It links to neighbouring topics Companies based in Liège, Defunct companies of Belgium, History of Liège, so understanding it makes those chapters shorter.
In everyday life
Look for Espérance-Longdoz outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Espérance-Longdoz in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Espérance-Longdoz means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Espérance-Longdoz out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Espérance-Longdoz in simple terms?

Espérance-Longdoz was a coal mining and steel production company located in the Liège region of Belgium. The company merged with Cockerill-Ougrée-Providence in 1970 to form Cockerill-Ougrée-Providence-Espérance Longdoz (known as Cockerill), later being merged into Usinor, then Arcelor then ArcelorM…

Why does Espérance-Longdoz matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Espérance-Longdoz?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Espérance-Longdoz.

Tags

  • Companies based in Liège
  • Defunct companies of Belgium
  • History of Liège
  • Steel companies of Belgium

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