2.11.2 Procedure Bull plugs containing Wianko accelerometers for detecting the magnitudes of the vertical, radial and the tangential components of earth acceleration will be installed approximately 15 ft below the earth's surface. The three components of acceleration-time will be orded at an underground shelter by means of Ampex tape recorders. Title: Sponsor: AFSWP 78 Dynamic Frressure Investigation erforming Agency: Project Officer: Mr. 2. Bryant Pallistic tesearch laboratories 2.12.1 Objective = To make a comparison of effects of a classic, dust free, shock front with effects observed at the KIOTHOIE operation, in order to assess dynamic overpressures’as a damage parameter. 2.12.2 Procedure For comparative purposes (@ s will be deployed in the region of 20 psi side-on pressure and 14%S side-on pressure. These ovcrpressures are calculated to produee’theyoane dynamic pressures which at KNOTHOLE produced severe damage andj ight demice respectively. i] 2.12.3 Remarks Wd — A few jeeps may be exposed on Shots:'Unjon and Yankee. No entry will be required after Union; however, low level aerial photographs will be used to record the damage. The main'partieipation will be on Shots Echo and Koon. Entry after the shots will ibe necessary to record damage. 25