A 20 gram split was analyzed for gold using a fire assay preconcentration and in some cases, an atomic absorption analysis. When the detection limits of lead and zinc were exceed for atomic absorption methods, a specific wet assay procedure was used. A metallic-fire assay method was used when coarse gold was suspected to be present in the samples, or basic size distribution of metallic gold was desired. The sample was crushed and screened to separate possible metallics in the plus 100 mesh fraction. The entire plus 100 mesh fraction was then fire-assayed. A 20-gram aliquot was fire-assayed from the minus-100 mesh fraction, with the final assay value being calculated from the combined data.