A rural mail carrier is in trouble for more than just allegedly failing to deliver all letters sent on his route. Boone County Sheriff Danny Hickman says undelivered mail, drugs and explosive materials were found at the home of 36-year-old Greg Huston. Hickman says officers discovered more than 600 pounds of undelivered mail, a quarter pound of marijuana and materials to make methamphetamine. U-S postal inspectors worked with local agencies in the investigation, and officials said the postal inspectors will seek a federal indictment against Huston. Hickman says meth-related materials and a firearm were found in Hickman`s mail delivery van that was parked on Postal Service property at Harrison.