Private equity deals

MidOcean Partners has acquired a “significant equity position” in Noranco Inc., a Toronto-based maker of metal components, kits and assemblies for landing gear, aero structure, and aero engine applications to the aerospace industry. No financial terms were disclosed.

Summit Materials has acquired Westroc Inc., a Pleasant Grove, Utah-based aggregates and ready-mix concrete company. No financial terms were disclosed. Summit Materials was formed in 2009 by The Blackstone Group and Silverhawk Capital

Trivest Partners has sold Allegiance Security Group, a manned security company in the Southeastern U.S., to Universal Protection Service, a Santa Ana, Calif.-based portfolio company of Caltius Capital Management. No financial terms were disclosed.

WorldOne, a New York-based provider of healthcare data collection and research services, has raised $35 million in funding commitments from Deerfield Management Co.

Thermo Fisher Scientific Inc. (NYSE: TMO) has emerged as the leading contender to acquire LifeTechnologies (Nasdaq: LIFE), a maker of DNA- sequencing equipment and lab materials, according to Reuters. The company’s market cap has now surpassed $11 billion, with a private equity consortium of Blackstone, Carlyle and Temasek still in the process.

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