Notices of intention to appeal from a final order or award of the board shall be filed with the board in Austin and must be in writing, clearly and accurately identify the compensation claim to which it pertains, including the board file number, and delivered to the board's office in Austin, either:     
       (1) in person; or       
         (2) by mail; or         
           (3) by wire or telegram; or           
             (4) by comparable means.            
     Source Note:        The provisions of this §59.5 adopted to be effective November 20, 1977, 2 TexReg 4323; amended to be effective November 11, 1983, 8 TexReg 4497.