3. The Minister, upon the filing of a memorandum of association as provided in section 6 and after consultation with the Conseil de la coopération, may authorize the formation of a cooperative association for any economic purposes, except(a) the purposes for which a credit union may be formed under the Savings and Credit Unions Act (chapter C-4);
(b) the operation of a hospital centre;
(c) the construction and operation of a railway;
(d) the insurance and trust businesses.