Mangan Achieves 1,000,000 Safe-Hours Worked Milestone! ARC Advisory Group Names Mangan SLM #1 Process Safety Lifecycle Software of 2019 Mangan Welcomes Horizon Consultants into the Mangan Family of Companies Mangan Receives the Highest Honor of Best-In-Class at the 2018 Houston Safety Excellence Awards Mangan Renewables Installs Photovoltaic Array for Leading U.S. Cold Storage Provider Mangan Welcomes Barry D. Payne & Associates, Inc. into the Mangan Family of Companies