IONA Contractors Ltd. is a Calgary based firm focused on providing services to the oil, gas and utility sector as well as other industries.

Boyd Lumley, founder of IONA Construction Co in 1973 and Joe Hansford founder of K-LOR Contractors Services Ltd in 1983 teamed up in 2005 to incorporate IONA Contractors Ltd. IONA Contractors Ltd is a wholly owned subsidiary of The envision Group. The long established team members of the company brings significant and diverse experience, knowledge and business skills to the firm.

IONA specializes in underground services, site excavation, grading and preparation, environmental site clean-up and remediation activities, decommissioning and demolition of facilities, excavation and disposal of contaminated soils.