1 These Regulations apply to a used or second-hand motor vehicle that is manufactured before the calendar year in which importation of the vehicle is sought to be made, if the vehicle
(a) has machinery or apparatus permanently mounted thereon and is imported for
(i) use in exploratory or discovery work in connection with oil or natural gas wells or for the development, maintenance, testing, depletion or production of a well up to and including the wellhead assembly, or
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