Winnipeg Free Press James Richardson & Sons takes full ownership of Bison Transport Inc. By: Martin Cash | Posted: 7:00 PM CST Tuesday, Jan. 5, 2021 Save to Read Later James Richardson & Sons, Ltd., one of the largest private companies in the country, has added another $1 billion of annual revenue to its portfolio with the acquisition of Bison Transport Inc. James Richardson & Sons, Ltd., one of the largest private companies in the country, has added another $1 billion of annual revenue to its portfolio with the acquisition of Bison Transport Inc. Winnipeg-based Bison is the sixth-largest trucking firm in the country and a major cross-border player, with a fleet of some 2,100 tractors, 6,000 trailers and 3,700 employees (including owner-operators).