Knife River acquires Strata Corporation

US: Knife River has completed its acquisition of North Dakota-based ready-mix concrete, aggregates and asphalt producer Strata Corporation for US$454m. Strata Corporation employs 900 seasonal workers and commands 28 ready-mix plants, three asphalt plants and 30 years of aggregates reserves, supported by a logistics fleet of seven trains and 400 railcars. It also includes a contracting services division. Strata Corporation will merge into Knife River's Central Region operations.