<Tr> <Th> Mayo, Robert P. Robert P. Mayo </Th> <Td> January 22, 1969--June 30, 1970 </Td> <Td> Richard Nixon </Td> <Td> </Td> </Tr> <Tr> <Th> Shultz, George P. George P. Shultz </Th> <Td> July 1, 1970--June 11, 1972 </Td> <Td> Shultz had previously served president Nixon as Secretary of Labor and would later serve under him as Secretary of the Treasury and under Ronald Reagan as Secretary of State . </Td> </Tr> <Tr> <Th> Weinberger, Caspar W. Caspar W. Weinberger </Th> <Td> June 12, 1972--February 1, 1973 </Td> <Td> Weinberger later served as Secretary of Health, Education, and Welfare under presidents Nixon and Ford, and as Secretary of Defense under president Reagan </Td> </Tr> <Tr> <Th> Ash, Roy L. Roy L. Ash </Th> <Td> February 2, 1973--February 3, 1975 </Td> <Td> Richard Nixon Gerald Ford </Td> <Td> </Td> </Tr>

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