The commissioner may permit, under the commissioner’s direct supervision and control, any Civilian Conservation Corps, Works Progress Administration, or other state or federal relief agency actually engaged in the improvement and conservation of state trust fund lands within the boundaries of any state forest to clean up and remove all dead or down timber, underbrush, rotting logs, stumps, and all other combustible refuse and debris which is deemed to be a fire hazard, or the removal of any trees in forest stand improvement and cultural operations which is advisable in the interest of good forest management; and to use so much of these cuttings for firewood and other forest development needs while these camps are thus actively engaged in the improvement and care of these forests.