Analysis for concentrations of Pt, Pd, and Au by either fire assay, fire assay followed by atomic absorption, or ICP spectroscopy. Analysis for concentrations of Ag, Cu, Fe, V, and Ti by either atomic absorption or x-ray fluorescence. In cases of multiple analysis methods the authors selected and presented what they felt to be the most accurate value from available data. Analyses were conducted at the following labs: TSL Laboratories, Spokane WA, Bondar-Clegg Inc., Lakewood CO, and the Bureau of Mines Research Center, Reno NV.
