A. Each commissioner may administer oaths and certify to all official acts. The commission, or a commissioner, or any party, may take depositions as in a court of record.

B. Each witness who appears by order of the commission or a commissioner shall receive for his attendance the same fees allowed by law to a witness in civil actions, which shall be paid by the party at whose request the witness is subpoenaed. The fees of a witness subpoenaed by the commission shall be paid from the fund appropriated for the use of the commission as other expenses of the commission are paid. Any witness subpoenaed, except one subpoenaed by the commission, may, at the time of service, demand his mileage and one days attendance, and if not paid need not attend. A witness furnished free transportation shall not receive mileage.