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AECOM

American multinational engineering firm

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 27, 2026
Entity authorityQ2825507
Source-derived summary

AECOM (, ay-ee-KOM; formerly AECOM Technology Corporation) is an American multinational infrastructure consulting firm headquartered in Dallas, Texas.

The company's official name from 1990 to 2015 was AECOM Technology Corporation, and is now AECOM. The company is listed on the New York Stock Exchange (NYSE) under the ticker symbol ACM.

As of 2023, AECOM had approximately 51,000 employees, and was number 291 on the 2023 Fortune 500 list.

History

1910–1990

AECOM traces its origins to Kentucky-based Ashland Oil & Refining Company, which in turn grew out of Swiss Drilling Company, founded in Oklahoma in 1910 by J. Fred Miles. He gained control of some 200,000 acres and formed Swiss Oil Company in Lexington. In 1924, Miles launched a refining operation called Ashland Refining Company, headed by Paul Blazer. While the parent company struggled, leading to the ouster of Miles, Ashland prospered under Blazer's leadership, and in 1936, he was named chief executive officer of the reorganized company, Ashland Oil & Refining Company. In 1966, Ashland acquired Warren Brothers and became involved in highway construction and construction materials. The company was able to take advantage of refinery byproducts to produce asphalt. Ashland grew into one of the nation's major road-construction firms, and laid a foundation for AECOM. Through a series of acquisitions and technological developments, Ashland grew to include chemical, petrochemical, highway construction, and construction materials firms within its realm, laying the groundwork for a management buyout of Ashland Technology in 1985.

In the 1970s, Ashland Oil & Refining became Ashland Oil, Inc.

Editorial summary

This brief starts where responsible research should: with the source description of “AECOM” as american multinational engineering firm. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1990, 2015, 2023, 1910—that can be checked directly. The linked authority record independently contributes the date 1990-04-06. The account is most persuasive where AECOM, American and multinational can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as american multinational engineering firm. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 27, 2026. The linked authority identifier is Q2825507. VIAF identifies the subject as 273427245. The Library of Congress control number is nb2010005184. 2 of 5 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 1990, 2015, 2023 and 1910.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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  1. Establish the record: confirm the title “AECOM”, its source revision and the description used here.
  2. Expand the search: follow AECOM primary sources, AECOM archive and AECOM research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from AECOM” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.