The aim of bonding is to bring all the bonded parts to the same electrical potential.
Earthing is the most important factor to lightning and surge protection, without a proper earth the current will take the path of least resistance and can create havoc in building and structures. The better the earthing the least problems you will have with your lightning and surge protection installations.
Exothermic Welding For Permanent Electrical Connections.
Exothermic welding is a safe and efficient way of making an electrical connection between conductors without using an external energy or heat process. The reliability of connections between conductors often reduces over a period of time and in many cases becomes the weak point in the electrical ircuit. Such a problem does not exist with exothermic welded connections as they provided a permanent connection between copper/copper/aluminium/steel.
The basics for the height of a conductor are that the conductor must cover the protected area “thatch roof” with a 45 degree protection angel. If not you need to erect another mast until the area in question are covered fully.