A dump truck overturned in Danbury, closing Plumtrees Road for a  while.  Police responded to the accident around 10am yesterday.  A dump truck exiting a business, with its dump bed extended, struck the overhead power lines.  A utility pole broke, bringing down the lines and causing the truck to tip over.  The driver was transported to the hospital for treatment of injuries sustained in the accident.  A passenger was checked by EMS at the scene.