• American Combustion Service Inc. (Mokena, Ill.) is celebrating its 25th anniversary and has expanded into new corporate headquarters in Mokena.

• Murphy Co. (St. Louis) hired William Conaway as project manager. He will be responsible for planning and executing projects, overseeing construction sites, and managing project objectives, requirements, and personnel.

• ARC Mechanical Contractors Inc.’s (Bradford, Vt.) Michael Cook and Brian Sager passed the LEED Accredited Professional exam in New Construction and Major Renovation.

• Comprehensive Energy Services Inc. (Orlando, Fla.) hired Douglas Glenn as manager of its newly formed Engineered Systems Group.

Publication date: 08/03/2009