Founded in 1951, Kokosing is a third-generation family-owned construction group that builds and maintains industrial facilities and infrastructure, and produces construction materials. Its companies include Kokosing Materials, which supplies asphalt, and The Olen Corporation, which mines and processes aggregates; McGraw Kokosing also operates an off-site fabrication business. The organization reports 4,000 team members and serves clients across the Midwest and Mid-Atlantic.
ASME Certificate
National Board Certificates S, U, and R
ODOT 1069 Prequalified Aggregate Supplier
Registration
The Jurgensen CompaniesThe Jurgensen Companies is a family-owned, Cincinnati-based construction and materials company established in 1934. For more than 85 years, it has served Ohio, Kentucky, and Indiana through heavy highway construction and the production of aggregates and asphalt, alongside paving and infrastructure work.CINCINNATI, OH
H&K Group, IncFounded in 1968 as Haines & Kibblehouse, H&K Group, Inc. is a family-led, vertically integrated heavy civil construction and construction-materials company serving the Mid-Atlantic. Its operations include producing asphalt and aggregates, building materials, and delivering heavy civil contracting services across the region. The company grew from its original family business into a group of affiliated companies while retaining its local operating presence.EASTON, PA
The Gerken CompaniesThe Gerken Companies, founded in 1959 by Julian Gerken, is a family-owned construction and materials company headquartered in Napoleon, Ohio. The company produces asphalt materials, ready-mix concrete, and aggregate products, and provides asphalt paving, milling, and construction services. With more than 600 employees and multiple subsidiaries, it serves the construction industry across northwest Ohio and southeast Michigan.TOLEDO, OH
The Morrissey OrganizationsThe Morrissey Organizations are family-owned construction and construction-material businesses serving the Eastern Pennsylvania and Southern New Jersey region. James D. Morrissey, Inc. was established in 1935 and builds and maintains roads and other infrastructure, while affiliated operations produce aggregates, asphalt, ready-mixed concrete, and precast concrete products. The organizations describe more than a century of service to the construction industry.HUNTINGTON VALLEY, PA