[Elecraft] Re:Ufer Ground question

[N2EY at aol.com]

In a message dated 7/14/05 12:39:32 AM Eastern Daylight Time, 
davereed at w5sv.org writes:


>       all the points at which the rebars
>       touched each other  were cad welded (I think this is the term but
>       it has been a while); the process uses little molds that are
>       filled and then fired, resulting in a corrosion free weld (no
>       oxide in between) 
> 
> 

That's cadwelding, aka thermite welding. A mixture of powdered iron and 
aluminum is set afire (usually by a bit of magnesium powder) and the resulting 
reaction will weld the steel. 

73 de Jim, N2EY