(19 February 1945)

A large ventilator shaft with large openings on each side dominated the hill. Inside the shaft, steel rungs were set in the concrete to form a ladder to the floor of the magazine.  A huge crater was up against the east side of the shaft.  I put my headquarters here and assigned my radio operator and two runners to guard the shaft in case Japs came up the ladder during the night.  I had an extra runner, George Mikel.  Between 40 to 50 feet east of the large shaft, was a small ventilator with louvered sides. West of the large shaft, about fifteen feet, was another small ventilator shaft identical to the west shaft. At the southwest part of the hill was a concrete platform about four or five feet above the ground.  Concrete steps lead up to this floor, which obviously was the floor of a building.  I know now it was the BC Station (battery command). Underneath it was another vent shaft which I did not notice.