43. A commissioner or a person generally or specially authorized by the board may(1) enter the establishment of a permit holder during business hours and make an inspection of the premises; he may, in particular, examine the products found there, take samples, examine the registers or other documents and take extracts therefrom or make copies thereof;
(2) order a motor vehicle or other means of transportation to stop if he has reasonable cause to believe there is grain in the vehicle, board the vehicle and inspect the grain;
(3) require any information relating to the application of this act and the regulations and the production of any document connected therewith.