TEHRAN August 30 (Shana)--An NGL plant in Siri Island has produced more than 22 million dollars in revenues in the past year from exporting naphtha, propane and butane, a plant official said. Reza Haqiqi said the NGL plant produces 140,000 cubic feet of gas and 15,000 barrels of naphtha and gas products a day. He added that the plant is working at ...