Over the years Coolsaet has been involved in numerous special projects including River Crossings, Boring, Hot Oil Lines, Oxygen Lines, Road Relocations, Congested Area Construction, Short and Large Diameter Pipe Construction, Pipeline Rehabilitation, Anomaly Investigation and Replacement, Class Change, Hydrostatic Testing of Existing lines, Pipeline Cleaning, Pipeline Modification for Caliper and ILI Inspection Tools for Integrity Projects, and Wastewater Treatment Facilities.