Sawmill in Northern California (IMAGE) University of California - Berkeley Caption Unlike large timber, small trees cannot usually be sold to sawmills to recoup some of the cost of the forest thinning treatments. Credit UC Berkeley photo by Daniel Sanchez Usage Restrictions with credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.