CHAPTER Ii, SECTION 3 Within the inner stabilized area was a 10-foot-square, 6-inch-thick concrete slab, thickened at one end to 3 feet for the 5-foot- square area. Two additional slabs, 4x12x2 feet deep, were located adjacent to the other slab. This station occupied the same space as Stations J-3220.01 and J-3241.01 in Building T-249. Details of the modification are discussed under Station J-3230.01. Each of the slabs contained threaded inserts or anchor bolts to tie down the launcher that rested on all three slabs. STATION: J-6001 SITE: Johnston Island STATIONS: J-3261.01 and .02 USER: ABMA SITE: Johnston Island PURPOSE: USER: SC Missile Firing Pad and Tower PURPOSE: Launching Pad for Instrument Rockets PARTICIPATION: J-40, J-41 DESIGN PSI: None PARTICIPATION: J-40, J-41 CONSTRUCTION: 4-14-58/7-7-58 DESIGN PSI: This station consisted of a mobile tower, an auxiliary pad, and a firing pad. The tower had been previously erected on Site How, but None CONSTRUCTION: 5-19-58, 6-4-58 Except for the size of the slabs, these stations were similar to the J-3260 series. One slab was 5 feet square and 2 feet deep; the other two were 3x10x2 feet deep. STATION: J-3262 SITE: Johnston Island USER: SC PURPOSE: Photographic Building PARTICIPATION: J-40, J-41 DESIGN PSI: None CONSTRUCTION: 4-21-58/7-7-58 A wood structure, 12x17x8 feet, with attached storage room, 10x12x8 feet, was required for this station. The pitched roof of the main portion was dismantled and relocated with modifications. It was of bolted steel frame construction 24 feet square and 84 feet high, The existing roof struc- ture, roofing and siding, wall louvers, girts, sliding and swing doors were not re-installed. There were six platforms, each framed with steel and covered with aluminum grating on which plywood was placed to close the grating spaces. The platforms had been designed to allow the tower to be moved so as to encompasss the missile in a vertical position. The platform at the 4-foot level was utilized as access to the other platforms and theelevator. The plan opening in this platform was 15x17 feet, and the remaining portions were covered with grating. An extension, 5x24 feet, was pro- vided at this level outside the main tower fram- ing on each of two opposite sides. The extensions of the building was removable in two sections, each section sliding down tracks from either side were used to support concrete ballast blocks which stabilized the tower. two explosive links actuated by a single remote The platforms at the 12-foot, 41-foot, 50foot, and 64-foot levels contained a 624-footdiameter opening in the center, and the portion of the roof ridge. The operation of the sliding roof sections was accomplished by the use of signal. A hand-winch was provided on the building to raise the sections again to the closed position. Hinged-down shutters were provided on the two 17-foot walls just under the eave. Nominal lighting and receptacles were also included in the design. STATION: J-3440.01 SITE: Johnston Island USER: SC PURPOSE: Microbaragraph Recording Station PARTICIPATION: J-40, J-41 DESIGN PSI: None CONSTRUCTION: 5-1-58/7-7-58 of the deck from the front edge of the platform to the opening was designed as a pair of hinged platform sections which were counterweighted for manual operation. The existing 624-footdiameter opening in the 12-foot level platform was increased to 9 feet because a new orientation of the missile fins necessitated additional clear- ance cut-out. The plywood on top of the grating at this level was field cut to fit the contour of the missile and fins. A platform was provided at the 77-foot level to seat the elevator hoisting equipment. Checkered floor plate covered an area 8x24 feet. Because the siding wasnot re-installed, all platform levels were provided with pipe posts and cable handrails. A personnel elevator, 4 feet square, operated to all levels, Interlocked safety gates were proPage 137