canceled, On July 28, 1950 J-Division deleted E-422, added E-212a, D-422la, and C-4226, On February 19, 1951 the AEC moved 4224a, b, c on Runit because of conflict with the coaxiel cable ditch. Stations through 5163 511 through 513 - Engebi ~ Program - Engebi — Program Users: Stations Users; Stations 517] through 51 5182 - Muzin - Program 5 Users; Stations 519 and 5192 - Bogon - Program 5 Users. These stations were the same as the station 74 series. The locations and description were obtained from the LASL Instrumentation Chart. Station 5182 was added on September 9, 1950 by J-Division, Stations E~5163, S-5173, S-5174 were added to the program on October 14, 1950 by the AEC, Stations 59l1a and b - Runit and The Aomon Group - NBS. To provide a small, but dust~protected work area near stations 54 and 57 respectively, a 6 foot by 10 foot by 61/2 foot high wood frame building sheathed both inside and outside with plywood was designed, The two work benches across the ends of the building were provided with electrical outlets, These stations were added to the program by J-Division on June 14, 1950. Minor changes involving lights and openings were made by the User on August 10, 1950, . Stations 5928, b, c, and d — Engebi and Runit - NBS, ard 14 foot by 28 foot tents over wood frames. These were stand They served as workshops and covered storage areas. 592b was provided with a concrete slab; the rest had earth floors. J-Division approved the addition of these stations on June 14, 1950. 592a and 592e were relocated by the User on August 10, 1950. Stations 593a, b, and c — Engebi and Runit - NBS, To cover the batteries that were required by stations 52 and 53, a wooden console was used. The console was a wood frame 14 feet 9 inches by 6 feet 3 inches by 2 feet 6 inches high sheathed on the exterior with plywood. This was mounted on a concrete slab, One end was hinged for access. These stations were added to the program on June 14, 1950 and relocated by the User on August 10,1950, Stations 6101 through 6104 - Engebi; and Station 6105 —- Muzin — OWS, This was a 3 foot by 3 foot by 3 foot hole in the ground with a 4 inch thick concrete slab at the bottom. At the time the User placed his equip~ ment, the hole was backfilled with concrete, This requirement was given to H & N on May 23, 1950 by J-Division, The concrete base was added on January 5, 1941, Station 622 - Engebi ~ NML; Station 624 - Muzin ~ NRDL; Stations 625a and 626 - Kirinian - NRDL. These stations were racks for exposing various samples during detonation. The racks were designed and furnished by the User. Information on the location of these stations was furnished by AEC October 14, 1950. administrator, NRDL. 622 was deleted on February 17, 1951 by the AEC contract Station 623 - Muzin ~ NML and NRDL; Stations 625 and 626e - Kirinian These instrument shelters were buried reinforced concrete buildings having inside dimensions of 5 feet by 8 feet by 7 feet 6 inches high. building floors were set 2 foot 6 inches below final grade; the rest of 5-176 The