The laboratories analyzed samples for gold by fire assay pre-concentration of a 30-gram sample followed by an atomic absorption spectroscopy (AA) finish (for gold) and an inductively coupled argon plasma-atomic emission spectroscopy (ICP-AES) or inductively coupled argon plasma-mass spectroscopy (ICP-MS) finish (for platinum and palladium). Silver, copper, lead, zinc, and molybdenum were analyzed by ICP-AES. Sample handling differed with regard to sample decomposition for inductively coupled argon plasma (ICP) analysis. The partial digestion refers to the use of aqua regia to dissolve crushed material for ICP analysis. The laboratories analyzed those samples of copper, lead, zinc, and molybdenum that exceeded the upper detection limits [...]