Thoroughbred Sire Mr. Prospector, 29, Dies in Kentucky

Mr. Prospector, who went from an undistinguished racing career to prominence as the nation’s top thoroughbred stallion, died Tuesday. He was 29.

Mr. Prospector came down with the colic early Tuesday morning and was diagnosed with an inflammation of the membrane lining the abdomen. Acting on the advice of veterinarians, Claiborne Farm owner Seth Hancock had him euthanized.

Koch said Mr. Prospector will be buried in the Claiborne cemetery, between Nijinsky and Secretariat.

Mr. Prospector went to stud in 1975 after earning a modest $112,171 in 14 races in 1973 and ’74. His offspring includes 1982 Belmont winner Conquistador Cielo, 1985 Preakness winner Tank’s Prospect, 1988 Breeders’ Cup Classic winner Seeking the Gold and the champion sprinter Gulch.

Mr. Prospector had sired a total of 1,014 foals and 162 stakes winners through the end of last year.