A method of cold fabricating an intermetallic alloy composition, comprising steps of coating an article of an intermetallic alloy composition with a viscous medium which provides a moisture resistant barrier on the surface of the article, fabricating the coated article into a desired shape, and optionally removing the coating from the shaped article. The alcohols are produced by hydrogenating a benzene ring of the benzyl ester and then hydrolyzing the resultant esters. The method does not require voice-free training periods to track the background noise nor is it susceptible to rapid changes in overall noise level making it very robust. A bottom end has a hole, typically of a two inch diameter, for surrounding the seedling. The air cooled heat exchanger may be enclosed in a concrete reinforced silo adjoining the building for impact protection.