<Tr> <Th> Effective </Th> <Td> June 12, 1960 </Td> </Tr> <Tr> <Th_colspan="2"> Citations </Th> </Tr> <Tr> <Th> Public law </Th> <Td> 86 - 517 </Td> </Tr> <Tr> <Th> Statutes at Large </Th> <Td> 74 Stat. 215 </Td> </Tr>

Which of the following activities is not supported by the multiple sustained yield act