Section 119-A. Attachments to utility poles; use of utility ducts, trenches and conduits

The commission shall prescribe just and reasonable  rates,
  terms  and  conditions  for  attachments to utility poles and the use of
  utility ducts, trenches and conduits. A just and reasonable  rate  shall
  assure  the utility of the recovery of not less than the additional cost
  of providing a pole attachment or of using a trench, duct or conduit nor
  more than the actual operating expenses and return  on  capital  of  the
  utility  attributed to that portion of the pole, duct, trench or conduit
  used.   With respect to  cable  television  attachments  and  use,  such
  portion  shall  be the percentage of total usable space on a pole or the
  total capacity of the duct or conduit that is occupied by the facilities
  of the user. Usable space shall be the space on a utility pole above the
  minimum grade level which can be used for the attachment  of  wires  and
  cables.