Happy birthday to you!
The history of Mack Trucks is intertwined with its Hagerstown, MD, assembly plant. First opened in 1961 as a 1 million sq. ft. facility on 280 acres, the plant now covers approximately 1.5 million sq. ft. and includes the company's Engine Development Lab along with production capabilities. Mack celebrated the facility's 50th birthday of powertrain assembly on May 4. Originally built for $45 million,