Air Products and Chemicals, Inc., Lehigh Valley, PA, has brought onstream a helium liquefier at its Liberal, KS helium purification/liquefaction facility. The liquefier processes over 600 million standard cubic feet per year (scfy) of product and expands the company's ability to meet helium needs of the magnetic resonance imaging (MRI), semiconductor, fiber optic, laser welding, and other industries. The installation triples the processing capacity of the facility to over one billion scfy.