Colteryahn Family's Pittsburgh Dairy Owes Longevity To Diversifying
Colteryahn Dairy, a 94-year-old business in Carrick, is the last of its kind in the city of Pittsburgh. The family-owned milk processing company, along with its co-family owned CoGo's chain of convenience stores, has managed to thrive as other regional processors closed or were gobbled up by larger competitors. The future is bright because it has diversified, said Carl Colteryahn III, CEO and grandson of the business' founder. …