There was several recent discussions on the internet about Death Valley equipment and the U.S. Potash operation. This is since the first of the year and may have been postings to the PacificNG page on Facebook. I seem to recall something recent about Death Valley having some hoppers from Killbourne & Jacobs that then went to the U. S. Potash.
Laws did get some trucks from Carlsbad and that may have been at the same time it received the former DV Brill motor car that went to Carlsbad with the rest of the DV equipment.
BN