LHO's fourth-Friday public tour occurred on the afternoon of 10/23.  Arrival time at LSB = 2:30 - 3:00 PM.  Departure time = 5:00 PM.  Group size = ~12 adults.  Vehicles at the LSB = ~6 passenger cars.  The group was on the overpass near 4:15 PM and in the control room from about 4:30 to 4:50.