John C. Brooks, 58, a vice president and member of the board of A. F. Jorss Iron Works in Arlington, died of cancer Saturday at Sibley Memorial Hospital.

He had joined A. F Jorss, a company which does ornamental iron works, as a shop boy 39 years ago. He later worked in the company's engineering department before being named vice president in charge of production in 1964.

Mr. Brooks had been president of the Iron Workers Employers Association of Washington and a founder and member of the board of the Institute of the Iron Working Industry.

He was a member of the board of the National Iron Workers and Employers Minority Training Program and had been chairman of the joint apprenticeship committee of Local No. 5 of the International Association of Bridge, Structural and Ornamental Iron Workers in Washington since 1960.

Mr. Brooks was born in Greensboro, N.C., and came to Washington in 1932. He was a graduate of McKinley Tech High School.

He served in the Merchant Marine during World War II.

He is survived by his wife, Mildred, of the home in Potomac; a daughter, Bonnio Gaffney, of Potomac; a sister, Vera M. Smith, of Greensboro; a brother, P. T. Brooks, of Fairmont, N.C., and two grandchildren.