58 samples were analyzed for silver, arsenic, molybdenum, lead and antimony using Atomic Absorption Spectroscopy after aqua regia digestion. 58 samples were analyzed for cadmium, cobalt, copper, iron, manganese, nickel and zinc using Inductively Coupled Plasma after aqua regia digestion. 55 samples were analyzed for gold, palladium and platinum using fire assay Inductively Coupled Plasma - Atomic Emission Spectroscopy after aqua regia digestion.
