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John Overall is an experienced professional with a diverse background in supervision, maintenance, and management roles across various industries. Currently serving as Assembly Supervisor at SERVA Group since July 2023, John previously held positions at LafargeHolcim from January 2018 to July 2023, including Maintenance Supervisor and Production Supervisor. Prior experience includes ownership of The GARAGE DOOR DEPOT® in Calgary from October 2012 to March 2017, where John was instrumental in providing comprehensive garage door solutions. John's tenure at Lafarge from December 2003 to July 2013 involved positions as Senior Terminal Manager and Millwright, managing operations and maintenance at the Edmonton terminal. John holds a Journeyman Red Seal Millwright degree from the Northern Alberta Institute of Technology, earned between 2000 and 2003.