Richard S. Miller retired Thursday as president...

Richard S. Miller retired Thursday as president of Security Federal Savings & Loan, but he will remain chairman of the Garden Grove thrift. He was succeeded by Roger Sullivan, who was vice president in charge of lending. Miller had been president since Security Federal was founded in 1956. Sullivan, who joined the S&L; in 1987, has a background in mortgage banking and consumer lending. A Diamond Bar financial services firm, Fin West Group, recently dropped its plan to buy Security Federal because of uncertainties created by President Bush’s pending bill to rescue the industry. The S&L;, which had lost money for several years and saw its capital dwindle, has earned more than $250,000 in the first five months of 1989, Sullivan said. He added that the thrift will use its earnings to build up its capital, an institution’s final reserve for unexpected losses.