Workers run checks on the distillation tower of the Imperium Renewables biodiesel plant in Hoquiam, Wash.
Workers run checks on the distillation tower of the Imperium Renewables biodiesel plant in Hoquiam, Wash. Drew Perine / Tacoma News Tribune / MCT
Workers run checks on the distillation tower of the Imperium Renewables biodiesel plant in Hoquiam, Wash. Drew Perine / Tacoma News Tribune / MCT

Fledgling U.S. biodiesel industry facing tough times

May 25, 2008 12:01 AM