(a) Every public warehouseman conducting a public warehouse, upon demand of the secretary, shall furnish such secretary, in such form as may be required, information regarding receipts issued or canceled, amounts of grain liabilities, amounts of unencumbered grain and total amounts of grain in the public warehouse.

(b) The secretary shall require from each public warehouseman a monthly statement of stocks of grain as of the last day of the preceding month for each licensed warehouse location. The statement shall contain such information and be in such form as may be prescribed by the secretary. Each such statement shall be signed by the licensed public warehouseman.