It was more than 10 years ago so I'm not sure I remember but my recollection was that I kept trying different spots until I found one where I was able to hammer the rod in all the way. I remember that the first spot I tried I hit a rock that was so large and strong that it really mashed up the tip of the rod when I whaled on it with a hammer and eventually had to pull it back out because it was not making progress. On Fri, May 8, 2015 at 11:13 AM, Adam Field wrote: > On Fri, May 8, 2015 at 9:15 AM, Sean Breheny wrote: > > > Ah, OK, thanks for the explanation. > > > > I don't think that method would work so well in the area where I had to > > drive a few ground rods (northeastern Pennsylvania) because the soil wa= s > > very rocky, often with fairly large rocks. > > > > > What did you end up doing? Did you use a jackhammer? I see they make grou= nd > rod driver adapters for some of the hammers, but ideally I'd like a cheap= er > option. > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .