My company does service work for a Window manufacturer in St Genevieve Missouri , just north of there...they are building , what will be , one of the nations largest concrete plants..right on the Mississippi. A lady who is our customer contact has a husband who is a heavy equipment operator, making the road to the Mississippi river, so they can move heavy equipment in . ....some pretty brushy, rough country......word is , there are some 6 foot long timber rattlers being found or "discovered" in that area. For those of you not familiar with it, say an hour south of Saint Louis....right along the river. I know there are 7 foot long Eastern Diamond backs....and I have personally seen 7 foot long rattlesnakes in South Texas.....but never one that big here.....not just one or two being found in Missouri ......the term "dozens of them " is being used....watch your step..!!!!!!