New Contract, Reported By Tucson FirmBy JAY HALL Citizen Staff WriterA new contract with Argentina and expansion of its recent contract with the Brazilian Air Force from the original $3 million on toward the $5 million mark were announced today by Hamilton Aircraft Co. of Tucson.Gordon B. Hamilton, company president, declined to state the amount of the new contract for plane modifications with Argentina. That government, he said, had expressly requested the amount of the contract and the number of planes involved not 'be made public.He acknowledged that the sum is ‘‘less than the Brazilian contract.”A $3 million contract for the modification of B-26 bombers for the Brazilian Air Force “is being enlarged and will probably total close to $5 million when the job is completed,” Hamilton said.The work for Argentina will consist of engineering modifications for T28 aircraft which will be converted for aircraftThe work for Argentina will consist of engineering modifications for T28 aircraft which will be converted for aircraft carrier use. They will be used primarily, Hamilton said, for training carrier pilots for the Argentine Navy. IThe new contracts have already increased the employment roster at Hamilton from approximately 70 in October to about 100. A projection by the company indicates employment of 325 by March 2.With announcement of the Brazilian contract in October, Hamilton said chances were ex-' eellent for a $20 mi n contract to follow ne::* year wUh a different aircraft.The company is on South Park Avenue at t'^ edge of Tucson International Airport and is in its 20th year as a leading modifier of military planes.Brazil's planes are being flown into Hamilton for the modification work, the first contingent having arrived in mid-November.The Argentina contract, however, will be fulfilled in a different manner.Materials, engineering drawings and modification kits will be shipped to Argentina for onsite alteration of T-28 planes there.These shipments, said Hamilton, are expected to be fully delivered within the next two months.Argentine officials have met in Washington, D.C., with two consulting engineers specially hired by Hamilton for instructional briefing. The company does not anticipate any need to send personnel to Argentina, its president said.Wing and landing gear changes and tail brake additions will be among the Argentine modifications.Referring to the federal bai-ance-of-payments program unveiled on New Year's Day, Hamilton said today, “The Brazil and Argentina orders will assist President Johnson's program for bringing dollars back into the United States.”