10 samples were analyzed for trace elements using Instrumental Neutron Activation Analysis. 10 samples were analyzed for silver, copper, lead and zinc using DC Plasma Emission Spectroscopy. 10 samples were analyzed for boron using Prompt Gamma Neutron Activation Analysis. 10 samples were analyzed for mercury and lithium using X-ray Fluorescence. 10 samples were analyzed for tellurium using Atomic Absorption Spectroscopy.