 Major companies that have facilities in the Donora Industrial Park include A-1 Babbit company, Apex N.A., Area Agency on Aging, Bergen Power Pipe Supports, BMA of Donora, HYTEC Inc., Dyno-Nobel Inc, Eastern Alloy, Eastern Hydraulic & Machine, Elizabeth Milling Corporation, Elliott Support Services, Glosser MFG, Industrial Nonferrous Casting Company, K-Z Tool Company, Airgas Specialty Products, Inc. (formerly LaRoche Industries), McGrew Welding Fabrication, Metalife Resources, MIDA Inc., Mon Valley Child Care, Mon Valley Sewage Authority, Monessen Ambulance Service, Nitrous Oxide Corporation, Power & Industrial Services Corporation, Nichols Miniatures, Pittsburgh Post Gazette Distribution Center, RAS Industries Inc., Regal Industries Inc.and Spartech Polycom.Donora is home to the world's second largest "Cement City" housing tract, innovated by Thomas Edison.The Cement City Historic District consists of 80 "poured in place" homes.