New York, New York 1953 Harlan H. Bradt of the Croydon Hotel, 12 East 86th Street, a consulting mining engineer with offices at 15 William Street, died yesterday of a heart attack at the age of 62. A graduate of the University of Wisconsin, he later studied at Stanford University and the University of Minnesota. He was a developer of the Iron Chief iron min the Eagle Mountains of California. Mr. Bradt belonged to the New York Mining Club and the American Institute of Mining Engineers. He leaves his wife, the former Harriet Faville; 3 daughters Mrs. J. Frederic Taylor, Mrs. John Oestreicher and Elinor Bradt, and 1 son, Harlan H. Brandt Jr.