Representative Charlie Rose (D-N.C.) is still chasing Iraqgate--the alleged conspiracy by the Reagan and Bush Administrations to arm Saddam Hussein. Rose has asked the Justice Dept. to pursue charges against Terex Corp. for allegedly giving false information to his subcommittee during a 1992 probe of companies that supplied Iraq with military gear. Rose says a Terex claim that it provided Iraq with 10 dump-truck chassis is contradicted by a recently declassified State Dept. cable, saying Terex shipped 81 dumpers. Terex says Rose "deliberately misrepresented" the truck data.