CHAPTER II, SECTION 3 Stations 1831.01 and 1831.02 were identical electrically. Power to each of the stations was supplied by a 10 KW, 120/208-volt, 3-phase gasoline engine generator. A one-inch conduit with four +8 conductors was installed from the generator to a 12-circuit lighting panel. One 10amp, 120-volt, 3-wire receptacle was installed for radio use and a signal cabinet was mounted over the radio receiver bench. A %-inch conduit with two #12 conductors was installed from the signal cabinet to an EG&G relay. For this relay, a 34-inch conduit with two +12 conductors terminated in a reversing magnetic starter. A one-inch conduit with seven #12 conductors was installed from the starter to the door closer unit which consisted of a 4 HP motor and two limit switches. Power was provided from the lighting panel by a %-inch conduit with three #12 conductors. The door was opened and closed by radio signal. A 20-amp, 120-volt, single-phase , 3-wire receptacle was installed for each User-furnished 1500-watt searchlight. STATION: PURPOSE: SITE: 1910 Instrument Shelter Yvonne USER: DOD-19 PARTICIPATION: 6 CONSTRUCTION: 4-21-56/4-26-56 Station 1910 was existing IVY Station 810.09. It consisted of a concrete pit with inside dimensions of 2’-6” x 2’-6” x 4’ deep and with a top madeofsteel plate. A new steel blast door, conduit, a ground rod and a minus 1 second timing signal were provided. No power was required. STATIONS: PURPOSE: SITE: 1911.01 and 1911.02 Blast Effect Study of Two Devices Yvonne USER: DOD-19 PARTICIPATION: 6 CONSTRUCTION: 4-19-56/4-27-56 These stations were two cylinders of %inch-thick steel having a hemispherical top. The inside diameter was 2’-6” and the height was 2’-9, Each cylinder was mounted on an 8 x 12’ x 2’-thick reinforced concrete foundation and had a steel base which was isolated from the cylinder wall. Cable from each of these stations was placed in an 18” V-type ditch which led to Station 1910. A total of 18 cubic yards of concrete was poured. STATIONS: PURPOSE: SITE: USER: PARTICIPATION: CONSTRUCTION: 1920.01 thru 1920.03 Radiation Samples Yvonne DOD-19 6 5-21-56/5-27-56 These stations were three 2-inch O. D. pipe brackets extending beyond the tower legs of Station 6. One bracket was 25 feet long located at the 275-foot level of the tower and two were 20 feet long at the 250-foot and 225-foot levels, respectively. Each bracket was guyed with %inch cables extended from the tower. User-furnished spheres were mounted on these suspensions by crossarms at the ends of the pipes. No power or timing signals were required. STATIONS: SITE: USER: PARTICIPATION: 1925.02 thru 1925.06 Ruby UCRL 3 This station was a series of 5’x 5’x 1’-9”high concrete blocks with 38-inch diameter 8inch thick steel discs in the center. They were prefabricated at Elmer and lifting rings were installed in the blocks to facilitate transporting them to a User-designated location around Station 3. A total of 14 cubic yards of concrete was poured. STATIONS: PURPOSE: SITE: USER: 2141.01 thru 2141.06 Detector Stations Ruby and Pearl UCRL PARTICIPATION: 3 CONSTRUCTION: 6-28-56/6-28-56 These stations were User-furnished and- Figure 2-97. Page 2-108 Stations 1911.01 and 1911.02 installed detectors hooked to a reclaiming cable installed by the Contractor. Stations 2141.01