All such hearings shall be held and conducted in the office of the comptroller, and the applicant and any and all other interested persons may appear and present such evidence as shall be relevant and material and the comptroller may cause the production and presentation of such evidence as he may deem relevant and material. At all such hearings, the applicant shall have the right to be represented by counsel and to examine and cross-examine any and all witnesses that may testify at such hearing. For the purpose of compelling the attendance of witnesses at such hearing, the comptroller shall have the power to issue subpoenas therefor in the same manner as subpoenas are issued in circuit courts. All witnesses who shall testify at any such hearing shall be sworn in the same manner as witnesses are sworn in the circuit courts and shall be subject to penalties for perjury as is otherwise provided under the laws of this state.