For any calendar year, the class of primary producers for which the Board is constituted includes all growers within the Board's area of operations who, during the previous calendar year, harvested more than 20 tonnes of MIA wine grapes, but does not include:
(a) in the case of a corporation:(i) a grower that is also a winery, or(ii) a grower in which a winery has a controlling interest, or
(b) in the case of an individual:(i) a grower who is also a winery, or(ii) a grower who is a director of a corporation that is a winery and who (as a grower) supplies the winery with all of the MIA wine grapes that the grower harvests.