The OSCO Construction Group was founded by K.C. Irving and Hans W. Klohn in Saint John, New Brunswick in 1955 and has grown into a collection of companies operating in precast concrete, ready mix concrete & aggregates, structural steel, reinforcing steel and construction management. The OSCO Construction Group is one of Canada's most trusted contractors, fabricators, and erectors. Accomplishing exciting... Read More about OSCO Aggregates