In the north woods of Maine, Tom Shafer is bumping along on a rutted trail in his four-wheel drive truck. Ahead are mounds of maple, pine, oak and birch trees, all cut a century or more ago and pulled from the bottom of a lake.
Clumped together in the muck, the logs wouldn't look like much to most people.
"The wood comes out and it looks like that, in those piles of mud," Shafer says. "It looks like construction debris."