1940s

  • 1941
    • Concrete Materials Inc. is incorporated in Merriam, Kansas.
1941

1950s

  • 1952
    Concrete Materials - 1952
    • The company grows to a fleet of eight mixer trucks serving the Kansas City market.
1952

1960s

  • 1961
    • Johnson County Ready Mix Inc., Portable Concrete Inc. and Fairfax Concrete Materials Inc. merge with Concrete Materials.
1961

1970s

  • 1977
    • The Monarch Cement Company, based in Humboldt, Kansas, acquires Concrete Materials.
1977

1990s

  • 1999
    • Concrete Materials invests further into the community with a state-of-the-art, fully enclosed plant, a four-bay shop and an office, all constructed of concrete tilt panels, as well as underground aggregate storage bins for greater efficiency.
1999

2010s

  • 2019
    • After nearly eight decades of growth, the company operates a plant with the capability of producing 130 cubic yards of ready-mix concrete per hour with a fleet of 23 mixer trucks.
2019

2020s

  • 2021

    Our new Spring Hill location is in the heart of Southern Johnson Co. This location includes a state-of the art high volume central mix plant, seasonal water supply and fully staffed maintenance shop. This will enable CMI to better service Johnson and Miami counties.

2021
  • 1941

    • Concrete Materials Inc. is incorporated in Merriam, Kansas.
  • 1952
    Concrete Materials - 1952

    • The company grows to a fleet of eight mixer trucks serving the Kansas City market.
  • 1961

    • Johnson County Ready Mix Inc., Portable Concrete Inc. and Fairfax Concrete Materials Inc. merge with Concrete Materials.
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