All flume companies availing themselves of the right of eminent domain under the provisions of the Chapter Eminent Domain shall become common carriers of freight, for the purpose for which they are adapted, and shall be under the direction, control and supervision of the Commission in the same manner and for the same purposes as is by law provided for other common carriers of freight. (1907, c. 39, s. 4; C.S., s. 3517; 1933, c. 134, s. 8; 1941, c. 97, § 5; 1963, c. 1165, s. 1.)