LAKE VIEW (AP) - An investigation is under way into a fire that destroyed a concrete plant in Lake View in western Iowa. No one was injured in the fire that broke out Monday night at Hancock Concrete Products. Lake View Fire Chief Jim Garrels says the fire was already through the roof when fire crews arrived around 7'30 p.m. It took firefighters about four hours to bring it under control. No one was inside the plant. The state fire marshal's office is helping with the investigation.