Since its founding in 1959 from humble beginnings in sand and gravel, Kohner Materials has evolved into a diversified, family‑owned group that now includes two sand and gravel companies, nine ready‑mix concrete plants, an equipment leasing arm, a
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pumping company, terminal warehousing, and three real estate subsidiaries—operating with about 80 employees and over 70 trucks to serve a 150‑mile radius across the Southeast Mississippi River Valley and Southwest Wisconsin
