I just acquired a beautiful 40x72 dairy barn. The current owners want it removed from the property. Only thing I'm worried about is someone has covered 3 sides of the barn with 4x8 sheets thaty are 1/8" thick. Its like a type of light gray cement board. I've never seen this before. Anyone have any idea what it might be? I'm just hoping that it does not contain asbestos. Any help would be apprecaited. Thanks