== Minimizing risk ==
Metal framing within the tower structure needs to be bonded to an earth grounding rod, and the bell frame should be adequately bonded to the structural ground.
Lightning rods should also be used and bonded to the main conductor leading to the grounding rod.
You should have a certified lightning expert check your structure for adequate protection. You can find more information on lightning protection from the following web resources.
* [http://www.nfpa.org National Fire Protection Association]
** [http://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=780 NFPA 780 Standard for the Installation of Lightning Protection Systems]