CHAPTER II, SECTION 3 e527, 1611 (Neg. No. W-869-11) Figure No. 2-52. Scientific Stations — North End of Yvonne. Cable boxes of sheet copper detail fabrication were provided in each opening behind the lead brick. Portable lights, telephone, field phone, and a signal cabinet were at the end of the tun- nel. A telephone cabinet was provided in the Detector Room. Power_was furnished from the island Transformer Station “A.” STATION: 1616 SITE: Yvonne USER: LASL PURPOSE: Plywood Baffle PARTICIPATION: 20 DESIGN PSI: None CONSTRUCTION: 3-22-58/4-20-58 Station 1616 was a wood frame baffle structure, 3724 feet wide by 19-1/6 feet high. The frame was supported on two laminated wood posts supporting 2x12 girts stiffened with 2x8's to channel shape the girt section, vertical 2x4 flat nailer strips between girts, and with 3g-inch plywood sheathing. A pattern of openings in the plywood was made for lines of sight Page 110 from Station 1522 through Stations 1616 and 1617 to Stations 1523.01 through 1523.04 and adjacent marker lights. Top of wall was at Elevation +27.50; bottom of wall was at Ele- vation +8.28 and grade Elevation at +9.0+. STATION: 1617 SITE: Yvonne USER: LASL PURPOSE: Plywood Baffle PARTICIPATION: 20 DESIGN PSI: None CONSTRUCTION: 3-22-58/4-20-58 Station 1617 was a wood framebaffle struc- ture 6014 feet long by 4 feet high supported on three 12-inch-diameter wood posts. The wall frame consisted of two rows of three 2x8 chan- nel-shaped girts with 2x4 flat vertical nailers between and %-inch plywood solid sheathing over. Top of wall was at Elevation + 26.0, grade Elevation was at +10. The station work point was aligned with Baffle Station 1616 and Station 1522.