A sump pump was provided on Engebi to drain station 13la, discharging five feet outside station. Station 132a - Engebi, The Aomon Group, and E+- UCRL, and Station 132b - Engebi, The Aomon Group, and E#- NRLK. These were partially buried recording stations made of reinforced coral aggregate concrete. On Engebi the buildings were two separate buildings, while at the Aomon Group the two stations were in one building provided with a dividing wall. E-132a was 12 feet by 16 feet by 18 feet high inside, E-132b was 12 feet by 28 feet by 8 feet high. Both structures had a minimum of 5 feet of earth cover, On the Aomon Group both rooms were 12 feet by 32 feet by 8 feet high. The anticipated loading was so great for the combined building on the Aomon Group that the reinforcing steel was supplemented with 20 inch I-beams at 12 inch centers, All of these stations were dehumidified, Design details were first furnished by J-Division on May 13, 1950. The preliminary H & N sketches were then reviewed by the Users at a meeting at Los Alamos, June 23, 1950. On June 27, 1950, a layout of the whole 132 series was furnished. Lead doors were requested on July 5, 1950. On July 7, 1950 there were submitted sketches and locations pertaining to 132b. Until August 16, 1950, the 132 stations were still incorporated in the site plans for Engebi, but on that date they were deleted. Stations 132a and b on Bogallua were deleted on August 14, 1950 when site was removed from the Program. On September 1, 1950, more drawings were furnished by the User showing locations of equipment and conduit. These requirements were incorporated in the drawings after J-Division had confirmed the changes on Sep~ tember 9, 1950. By November 7, 1950, construction was well under way, but it was still possible to revise nearly all of the pipe sleeve locations as requested by the User through J-Division. Station 132c - Engebi, The Aomon Group, and E-+-- NRLK. So as not to occupy valuable space inside of 132b, the power supply station and some of the mechanical equipment were placed in a shelter formed by placing a wooden roof over the area between the wingwalls on Station 132b. This gave an area approximately 35 feet by 10 feet by 10 feet high. When the wingwalls were constructed, fasteners were embedded in the walls to facilitate securing the gear. The original sketches were furnished on May 13, 1950, by J-Division. Station 132d ~ Engebi, The Aomon Gro and Ef- NRLK. Here again, the User consented to using a wooden lean-to roof over a concrete slab, The roof was fastened to the side of 132b and removed at the time the earth covering was placed over 132b. The saving in time and cost of these wooden lean-tos was considerable in both engineering and construction over the building of separate structures. otations 132e and f — Engebi, The Aomon Gro and E NRLK. To provide temporary work shops and covered storage areas, 14 foot by 28 foot tents were sufficient. The location was directly behind Station 132b, the building being serviced. The User furnished sketches and locations of these stations on July 7, 1950. Station 132g — Engebi, The Aomon Gro and E-f- NRLK and UCRL. station was a photo trailer supplied by the Users, This 5-171