But wait, there's more.

We had emailed Jason a few days ago asking for him to drop two dead trees in the calving paddock while they were here. They were large trees - 1.2m and 1m in diameter. They started on the larger one. It took a long time. It eventually came down. The second tree took relatively little time.
Jason thinks the bigger tree had been hit by lightning. They had to sharpen the chainsaw four times. Jason explained that the lightning calcifies the tree sap making it as hard as stone, thereby blunting the saw constantly.
It is well known that lightning struck trees are no good for firewood, presumably for the same reason.Read more