1. The use of only uniformly corroding materials which are subsequently 

 coated should be continued. The stainless steel fasteners on the existing 

 towers need not be replaced unless very long lifetimes are required although 

 the use of such materials in future towers is not recommended. 



2. The use of materials known to be immune to corrosion in critical 

 areas is recommended. 



3. Repair of coating systems with identical systems is recommended. 



4. The addition of a cathodic protection system to such a structure 

 would greatly increase its useful life and is recommended. 



