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	New Gas Process for Controlled Ripening Researchers set to revolutionize fresh fruit industry with new technology that converts ethylene gas into a powder form. ...more | 112 comments Welding Begins on Oregon Rail Project Welders will connect two, 80-foot lengths of rail by a thermite welding process that superheats aluminum, iron oxide and alloy elements to produce molten steel and permanently join the rails. ...more | 7 comments Airgas Chairman Sells 1.2 Million Shares Peter McCausland sells 1.2 million shares of Airgas common stock in privately negotiated overnight block trade. ...more | 3 comments
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Shielding gas