As part of the project, we recently completed our second round of sampling works, this time at BHP’s Mount Whaleback mine tailings storage facility. In this sampling work, we attempted a new sampling method to allow us to take a large quantity of material from depths relevant to in situ testing results, as follows: Three piezocone penetration tests (CPTu) were carried out in a 4 x 4m area The locations of each CPTu were surveyed A battered excavation to about 4m depth was cr