Con Dig (14-Oct-26) — Building materials supplier Ozinga has opened a new low-carbon cement mill in East Chicago, Indiana, adding capacity to produce approximately 1 million tons of slag-based cementitious material annually.
The facility uses ground granulated blast-furnace slag, a byproduct of steelmaking, to produce a supplementary cementitious material for concrete. The product can replace a portion of conventional Portland cement in suitable mixes, helping producers lower the carbon intensity of concrete.
The mill is positioned to serve Midwest construction markets through a combination of rail, road and water connections. Ozinga held an opening ceremony on October 13, marking completion of a major manufacturing investment in the region.
Construction of the facility supported more than 250 temporary jobs, according to the company’s announcement. Its opening expands regional supply options for concrete producers, public works contractors and large infrastructure projects.
Why it matters: New domestic production capacity for supplementary cementitious materials could help construction buyers diversify supply and meet demand for lower-carbon concrete as traditional fly-ash availability changes.
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