Luc Nadeau, owner of Nature's Casket moves a pet casket made from beetle-killed pine next to one for people (L) at his shop in Longmont, Colorado April 5, 2010. The beetle introduces a fungus to the tree that causes the blue stain. Colorado has 3 million acres of forest killed by mountain pine beetles and many uses are being found for the wood including casket making. REUTERS/Rick Wilking (UNITED STATES)