Duluth (Minn.) Teachers Retirement Fund will interview four finalists in its search for a manager to run $30 million in active domestic midcap value equities, said Jay Stoffel, executive secretary. He would not name the finalists. The $300 million fund needed a value allocation, he said; it terminated a value manager years ago and never replaced it. He declined to discuss further details. The board plans to choose a manager by the end of August. Consultant Jeffrey Slocum & Associates is assisting.