26 samples were analyzed for gold and mercury using Atomic Absorption Spectroscopy after HCl:HNO3 (3:1) acid digestion. 26 samples were analyzed for barium using Atomic Absorption Spectroscopy after HF-HNO3-HClO4 acid digestion with HCl leach. 26 samples were analyzed for tungsten using a Colorimetric technique. 26 samples were analyzed for tin using Atomic Absorption Spectroscopy after Ammonium Iodide Sublimation.