(a) When the Director finds after investigation that the distribution in Illinois of any class of food may, by reason of contamination with microorganisms during manufacture, processing or packing thereof in any locality, be injurious to health and that such injurious nature cannot be adequately determined after such articles have entered commerce, and in such case only, he shall promulgate regulations providing for the issuance to manufacturers, processors of packers of such class of food in such locality of permits to which shall be attached such conditions governing the manufacture, processing or packing of such class of food for such temporary period of time as may be necessary to protect the public health; and after the effective date of such regulations and during such temporary period no person shall introduce or deliver for introduction into commerce any such food manufactured, processed or packed by any such manufacturer, processor or packer unless such manufacturer, processor or packer holds a permit issued by the Director as provided by such regulations.(b) The Director is authorized to suspend immediately upon notice any permit issued under authority of this Section if it is found that any of the conditions of the permit have been violated. The holder of a permit so suspended shall be privileged at any time to apply for the reinstatement of such permit and the Director shall, immediately after prompt hearing and an inspection of the establishment, reinstate such permit if it is found that adequate measures have been taken to comply with and maintain the conditions of the permit as originally issued or as amended.(c) Any officer or employee designated by the Director shall have access to any factory or establishment, the operator of which holds a permit from the Director, for the purpose of ascertaining whether or not the conditions of the permit are being complied with. Denial of access for such inspection shall be ground for suspension of the permit until such access is freely given by the operator.