I had an idea of how to control the fiber they use. I know the Schuyler plant has room for it. Buy logs and debark and chip them your self. That way you know what species is used. I would say maple, oak, or cherry for a hardwood pellet. If they did that the control would be great, make sure the bark is gone no rot and chip it into a silo so no dirt gets into it. I know they have a giant drum dryer that should be able to handle drying the chips. That is what I would do if I was a pellet mill and did not have a source that I could rely on.