1920   Founded by John Sharp (co-author of the Boiler Code for Ontario) with 6 employees and a few welding machines  1934   (The late) Wim S. Dunsmoor was hired as a plant worker, becoming General Manager in the early 50’s  1963   Son William A. Dunsmoor, P.Eng, joined the family business, full time after graduation  1980   Moved to current plant at 49 Passmore Ave with 75 employees  1995 Acquired Continental Penn Services greatly expanding CNC machining capabilities  2001   Acquired Canada Millwrights and 14 Passmore Ave. as Plant #2  2003   Receives A2 License to manufacture Pressure Vessels for peoples Republic of China  2004   Major expansion of Plant #2 to 36,000 sqft and consolidation of CNC machining operation at that location  2005   Acquired Aurora Filters, consolidating engineering, manufacturing, marketing and service for proprietary brand pharmaceutical filters  2007   The ALL-WELD team achieves ISO9001:2000 certification!  2013   Acquired Patterson Industries, consolidating engineering, manufacturing, marketing and service for proprietary brand of process equipment  2016   Added A & F industries products  Today   Continuing the tradition of quality and service through diversification, pursuing new goals driven by our customer’s needs, with the 3rd generation, Scott Dunsmoor P.Eng., President and Jim Dunsmoor, General Manager