Plate P2. Photographs of samples after testing and measurement results of the experiments (graphs showing differential stress vs. strain curves and stress paths). 1. Section 186-1150B-8R-2. 2. Section 186-1150B-21R-1. 3. Section 186-1150B-42R-5, sample 1. 4. Section 186-1150B-42R-5, sample 2.