A stock of spare parts which the taxpayer kept on hand for potential use in the event of machine or equipment failure did not qualify as property "to be used" for the purpose of manufacturing or processing goods for sale for the purposes of the definition of qualified property" in s. 127(10)(c)(i) of the Act (now s. 127(9)) and paragraph (a)(i) of the description of Class 29 property. McNair, J. stated (p. 6294):
"The words in subparagraph 127(10)(c)(i) 'to be used' connote an actual physical or functional use of the prescribed machinery and equipment and spare parts stocked on shelves as an assurance against possible mechanical breakdown do not come within that concept of used, regardless of the soundness of the underlying business policy in stocking them."