Centenarian Marilyn Ozinga Istel was one of the matriarchs of the family that owns and controls Ozinga, the Mokena-based ready-mix concrete supplier. “She was just a very pleasant girl,” said Dolores ...

Concrete and building material supplier Ozinga has broken ground on a low-carbon cement manufacturing facility planned for East Chicago, Ind. Expected to be completed by the second quarter of 2026, ...

Ozinga broke ground recently on an East Chicago plant that's being billed as North America’s largest low-carbon cement mill.

The Ozinga family immigrated to Chicago in 1893 — the year of the World’s Columbian Exposition, when this city was the fastest-growing on the planet. It was a place of possibility, where immigrants ...