Project 1.10 ~ Vegetation Studies - A. D. Thornbrough = SC To determine the differences in overpressure, dynamic pressure, and sound speed over cleared sandy land and over vegetated areas. Project will measure overpressure, dynamic pressure and sound speed at equal distances from GZ over cleared sandy land and over land fairly well covered with vegetation. We will use Wiancko pressure gauges and Pitot tubes with the addition of the whistle gauge used on past operations. The recording system will be the same as used on Operation TEAPOT. A total of 17 channels ~- nine "P", four "Q" and four sound speed will be instrumented, These will be instrumented for the Ruby shot with instrumentation on Pearl. There will be a shelter built on Pearl, and there will be a total of five men in the FA from April 1 thru the shots.