Trust J R Mac’s team of certified welders with your next project. Safety is our top priority, so we diligently keep all of our required certifications up to date. We have also recently obtained a Certificate of Recognition (COR™). The COR™ Program verifies companies that have implemented a comprehensive health and safety program to reduce incidents and injuries. COR™ is endorsed by participating members of the Canadian Federation of Construction Safety Associations (CFCSA), including CSAM.