(28 Aug 1997) Spanish/Nat Argentina's president Carlos Menem signed a document on Thursday which will place 35 airports in the hands of private operators on a 30 year lease. The move comes as concern grows over the safety of Argentina's military-run airports. Eight senior ranking officials in the Argentinian air force have been dismissed as a result of as series of near collisions in mid-air which could have resulted in the loss of hundreds of lives. President Menem, a strong champion of