Michelle Chapman | Associated Press

With roots dating to the late 19th century, U.S. Steel has produced the materials used for everything from the nation's bridges and skyscrapers, to its tanks and battleships.

An arbitration board has ruled that U.S. Steel may proceed with its proposed acquisition by Nippon Steel, a deal that faces strong opposition from its workforce.

The Securities and Exchange Commission says that it has reached a settlement with industrial conglomerate Esmark and its chairman for announcing a false tender offer to buy U.S. Steel.

The United Auto Workers union has reached a tentative contract agreement with Mack Trucks that covers about 4,000 workers in three states. Mack Trucks confirmed a tentative agreement on a five-year contract early Monday after the UAW announced the deal just before midnight Sunday.

Aerospace supplier Arconic is being taken private by Apollo Global Management Inc. in a deal worth approximately $5.2 billion.