The story
Aecon's history began in 1867, when Scottish immigrant Adam Clark started a plumbing and gas fitting business in Hamilton, Ontario. Aecon's predecessor companies include the Foundation Company of Canada, Jackson Lewis, Lockerbie and Hole, Banister Pipelines, Nicholls-Radtke, Pitts Engineering Construction, and Armbro Construction.
As a group, Aecon's origins go back to 1957 to Prefac Concrete of Montreal, a company started by John M. Beck and his parents.
In 2010, Aecon acquired over 500 physical pieces of mining equipment and assets previously owned by Cow Harbour Construction, a large mining and land reclamation contractor located in Alberta's oil sands.
Chinese SOE takeover attempt
In October 2017, Aecon and CCCC International Holding Limited (CCCCI), the investment arm of the state-owned China Communications Construction Company, announced that they entered into a definitive agreement under which CCCCI would acquire all of the issued and outstanding common shares of Aecon for $20.37 per share in cash, representing an enterprise value of $1.51 billion.
In May 2018, the federal government of Canada blocked the sale, citing national security concerns.
Divestment of mining business
In November 2018, Aecon announced the closing of a definitive asset purchase agreement to sell substantially all of the assets related to its Contract Mining business to North American Construction Group for $199.1 million in cash.
From Wikipedia’s article on Aecon, shared under CC BY-SA 4.0.4