Mineshaft (foaled May 17, 1999, in Kentucky) was a multi-millionaire American thoroughbred racehorse and successful stallion. He was sired by 1992 U.S. Horse of the Year and U.S. Racing Hall of Fame inductee A.P. Indy, who in turn was a son of 1977 U.S. Triple Crown winner Seattle Slew. His dam, Prospectors Delite, is by leading North American sire Mr. Prospector. Bred and owned by the partnership of William S. Farish III, W. Temple Webber, Jr. and James Elkins, Mineshaft is a product of Lane's End Farm. He finished racing with a record of 10-3-1 in 18 starts and career earnings of $2,283,402.