Clinton L. Burnett, 76, a retired structural steelworker who was active in civic affairs in Mount Rainier, died Saturday at Prince George's Hospital after a heart attack.

Mr. Burnett was a member of the Mount Rainier Democratic Club and had served as a councilman for the city of Mount Rainier during the late 1960s. He also had been a volunteer driver for the Prince George's County Senior Citizens bus service.

He attended Mount Rainier Methodist Church and was a member of College Park Moose Lodge No. 453.

Mr. Burnett was a native of Manitoba, Canada, and came to this country in the early 1920s. After traveling about the country working as an ironworker, he moved to Washington in 1929.

He worked for several firms in this area and spent 10 years with the Potomac Iron Works in Hyattsville before retiring in the early 1970s. He was a long-time member of Iron Workers No. 5 of the International Association of Bridge Structural & Ornamental Iron Workers.

Survivors include his wife, Amy F., of the home in Mount Rainier; two daughters, Elizabeth B. Murphy, of College Park, and Charlotte Smith, of Point of Rocks, Md.; two brothers, four sisters, six grandchildren, and seven great-grandchildren.