Upon visiting this particular panel, I came upon a sorry sight.
http://img826.imageshack.us/img826/7578/1000377.jpg

I can only assume that this was the originally intended configuration.
http://img814.imageshack.us/img814/9623/1000378n.jpg

You can see an old ground clamp on the rod and partially burried in the
dirt. It must have been put on before the rod was driven because the
head was so mushroomed out that I had to cut it off before I could get a new
clamp on. Apparently, they just never bothered to finish the job, and the
wire wasn't bent or scored in such a way to suggest that it was ever
properly attached to anything.

Poor.