Fig. 2: Evidence of microstructure in vane shear test results.
From: Reply to: Creep deformation does not explain the Brumadinho disaster

Results of the vane shear tests VT-16-11 (Depth 9.0 m) and VT-16-12 (Depth 22.5 m) on the Brumadinho tailings (with permission, after Robertson et al. 3).