169. A marketing board may appoint a person to make such investigations and verifications upon the producers subject to the plan it administers as may be necessary for the purposes of the plan, by-laws, homologated agreements and arbitration awards.
The person appointed may, at any reasonable time, enter an office, establishment or premises if he has reasonable grounds for believing that such place is used for the production of the product marketed under the plan, examine the production areas and the product, examine the books, registers or documents relating to the production and take extracts from or copies of them.