Vocational Industrial teachers engaged by the Board shall meet the requirements outlined in Manitoba Regulation 55/67 (amended November 1972, 159/72). For the purposes of salary placement and with the approval of the Superintendent of Education, teachers with trade experience past the minimum required to attain Journeyman status or in non-designated trade areas, including the Business Education field, with three years’ work experience, may be granted additional increments as follows: where such additional trade experience contains a training or supervisory component the Superintendent may grant one increment credit for each two years of trade experience, to the maximum of that class.