CHAPTER Il, SECTION 3 the existing concrete wall of Station 1810. The addition was built over a filled area extending from the ocean side wall lines of the existing stations and between the stations to a top of slope eight feet beyond the lagoon end of the new building frame. The top of fill area spread from 18% feet wide between buildings to 28 feet beyond the lagoon wall line of Station 1030. The fill was 12 feet deep, bulkheaded at the ocean wall line of existing stations by a 20-inchthick reinforced concrete wall and sloped down to grade on the ocean sides. The frame build- ing floor was a 5-inch-thick concrete slab on ground. Wall framing was 2x4 studs with ply- wood sheathing. The roof frame provided a 55foot-long by 614-foot-clear hatch opening with removable wood frame panels surrounded by solid roof deck areas. The lagoon end-wall of the frame had a 1514-foot-wide by 3-foot-wide wood shutter opening out and hinged at the head line. Access to the frame building was by wood stairs up the slope of the fill in front of Station 1030. Twelve flanged 16-inch-diameter pipe spools were installed in the Station 1810 concrete wall along the length of the new frame building. General descriptions of miscellaneous general construction and mechanical and electrical in- stallations for this total station development are (Neg. No. W-877-4) Figure No. 2-54. Station 1811 — Site How 90% Complete. fence enclosure adjacent to the area. This site development was completed, but with the relocation of the ABMA program, this facility was cancelled. STATION: 1812 SITE: Bravo completed, but occupancy of the station was USER: NRL/LASL Site How to Johnston Island. PURPOSE: Aiming Light STATION: 1811 DESIGN PSI: SITE: How CONSTRUCTION: 3-18-58/3-28-58 USER: NRL/LASL PURPOSE: Thermal Radiation Measurements Located at the north end of Site Bravo, this station consisted of an 80-foot-long guyed too extensive to describe here in further detail. This total station construction development was abandoned when the events were moved from PARTICIPATION: None DESIGN PSI: None CONSTRUCTION: 1-27-58/4-5-58 Development of this station required a 100x70-foot stabilized area providing a 20x18- PARTICIPATION: None None pole buried 8 feet at its base and rising to Elevation ~ 80.0. Two User-furnished 500-watt searchlights were mounted on a cross-arm at the top of the pole. Power was supplied from a 2-kw gasoline-driven generator. With the relocation of the ABMA program on How Island this station was not used after completion of construction. foot by 8-inch-thick concrete slab, a concrete STATION: 2130 pedestal footings with steel cross beams and SITE: Oboe USER: UCRL PURPOSE: Rocket Launching Pad foundation wall and footing 33 feet long, three other miscellaneous steel details to support a NRL trailer off the ground, and a tent slab. Two User-furnished 20-kw motor generator sets were installed on the 8-inch slab adjacent to a signal cabinet and an island power supply panel board. Electric service was provided for the tent and the island telephone circuit to the supported trailer and one additional parked trailer. A 2400 °208,120-v, 75-kva transformer was provided at a barbed wire Page 112 PARTICIPATION: 4 and 5 DESIGN PST: No overpressure CONSTRUCTION: 2-10-58/2-27-58 The facilities of this station consisted of a concrete launcher pad, tent, and Usertrailer.