... into the repository). As shown in Figure 1, Location 1 in the S-90 (“South 90”) access drift to Room Q provided an opportunity to conduct geophysical investigations of the extent of salt damage for a nearly perfect two-dimensional configuration isolated from other areas of rock disturbance. ULTRASONIC VELOCITY...

.... One test, the Heated Axisymmetric Pillar (Room H), is perhaps the most unique experiment fielded to date. This test is a well defined cylindrical pillar, surrounded by an annular room. In theory, room and pillar are ideally axisymmetric; however, the construction sequence and access drift have...