I was scrounging some wood today and ran into a small problem. I was cutting in a small grove of trees that grew up between two fields that used to be used as cow pastures but now are used or Christmas trees. Anyway, I found a decent white ash that has been laying for a couple years and started to cut it at the base. All of a sudden, I start to see a couple sparks come from the chain. I stopped the saw and looked at the chain. It seemed OK, so I moved up around a foot or so. Cut half way in and sparks again. This time I rolled the log over and found that the tree had grown with some strands of barbed wire through it. Well, the chain was dull after cutting through the second piece of barbed wire, but I figured I could get another tree down before I head home. I spotted a standing dead maple and went to cut it. There was a pile of brush up against the backside of it, but I really didn't think anything of it. Started the cut and got almost all the way through it and then realized that the brush was hiding the barbed wire in this tree also! Well, needless to say, the chain is now toast. There are actual chunks out of the cutters. Good reason to get rid of the safety chain, but also a lesson learned. Take a better look at the stumps before I go cutting.