J. C. Karcher, working with W. P. Hasemann in the Arbuckle Mountains in the same year, appears to have been successful in obtaining reflections from the Viola ... Despite the present litigation, reflection work is going on at an unabated rate in all parts of the country. PRINCIPLES OF REFRACTION SHOOTING To understand the procedure of refraction shooting, let us study the block diagram of Figure 2.
|Title||:||The Explosives Engineer|
|Author||:||Nelson Sutro Greensfelder, Harry Roberts (Jr.)|