In view of the fact that a rehearing was granted by the joint board and the further fact that, so far as the record before us discloses, such rehearing has never been concluded, there can be, and is, no effective final order of the joint board requiring payment to the relator by the department. Hence, a writ of mandamus to compel the issuance of a warrant is not available to relator at this time. For these reasons, I concur in the result.