Frank Calandra Jennmar Services
Grounded in Safety. Elevated by People.
About Frank Calandra Jennmar Services
JENNMAR is an American manufacturer and service provider of ground control and infrastructure products for above- and below-ground applications, including steel roof support systems, ground stabilization chemicals, ventilation systems, and carbide tools. The company also provides installation services and staffing/temporary labor solutions, and operates through affiliates such as JENNCHEM, JM Steel, Jennmar Civil, Jennmar Engineering, XCAL Tools, and Weber Mining & Tunnelling. It began in 1922 when Frank and Mary Calandra opened a scrap metal business serving Pittsburgh's steel mills, and later shifted to mining roof support products.
Industry
Heavy Industry and Engineering (mining and infrastructure ground control products manufacturing)
Headquarters
258 Kappa Drive, Pittsburgh, Pennsylvania 15238, United States
Company size
4,000 employees
Founded
1922
What we do
Steel roof support systemsGround stabilization chemicalsVentilation systemsCarbide toolsInstallation servicesContract labor and staffing/recruitmentMining productsCivil and construction productsSteel serviceOEM manufacturing
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