11(2)Where notice has been given under section 33 with a view to the renewal or revision of a collective agreement then in operation or to the making of a new agreement and the Minister has appointed a conciliation officer or appointed a mediator under section 70, no application for certification of a bargaining agent of any of the employees in the bargaining unit as defined in the collective agreement shall be made after the date when the agreement ceased to operate or the date when the Minister appointed the conciliation officer or the mediator, whichever is later, unless, following the appointment of the conciliation officer or the mediator, if no collective agreement has been made,