Three Lamar County men accused of sex crimes against children are scheduled to appear for pre-trial hearings today in Sixth District Court. They are charging 51-year-old Jimmy Carr, of Powderly, with assault on a public servant and child pornography charges. Ronald Anderson, 33, is charged with Continuous Sexual abuse of a child and other sex crimes and 74-year-old Wiley Powers is charged with Continuous abuse and other charges. All three men remain in the Lamar County Jail.