The following explanations apply to the columns in Table B.2. Column 7 Column 1 The station numbers are for Operation Greenhouse. A reference mark was filed on the 33 and 34 stakes at the approximatetop of the straight portion of the stake, diametrically opposite to the direction of bend. All 33 and 34 stakes are bent 180° from Ground Zero. -— Column 2 The points (Pt. 1, 2, and 3) are indicated in Column 8 the following sketch. The original working point (W.P.) was reestablished, and the distance was measured from this point to the approximate center of the straight portion of each stake. > eras \ « 72 Ne ae Se.= 30° \ ol fo) ol PT 3 ° \ | PT 4 e m —_— sy TO GROUND ZERO _-—-~o——e— SS a Column 9 ee 0 Ao The length of bend was measured from the 3 | a“ reference mark, column 7, along the outside 288 curve to the end of the stake. ie Column 6 Column 10 The postblast ground elevations were taken on 17 July 1951. distance from a vertical line through the refer- Taste B.2 , (1) (2) (3) 34a W.P 280.05 (4) 10.32 10.31 3 10.43 309.05 261°30/02" 1 10.18 2 10.16 3 W.P 10,13 339.07 261°30'02" 1 2 3 34d W.P 1 2 3 (5) 261°30'02" 1 2 34c CRATER SURVEY,SITE C Distance, Elev., W.P. from Azimuth Top of Ground Zero of W.P.to Stake (ft) Ground Zero (ft) Pt. W.P. ence mark, column7, to the end of the stake. Preblast Sta, No. 34b The horizontal length of bend is the horizontal 9.69 9.67 9.59 369.10 261°30'02" 8.90 8.94 8.94 29