I just got a huge load of milled beech wood cut in 10"x10" blocks that I am cutting into 25"long sticks. I am going to split some as well. They make for a very long burn as they were used on a warf and are super dry being 40-50 years old. I must have gotten 2-3 cord of it. Anyway, the only worry I have is if they were ever treated with creosote. I have been told by several people that they have not, and they don't look like they have. They are browned on the outside and when cut, are pure wood color right through- no staining at all. How can I be sure that they never had creosote on them?