Precious metal refining refers to the separation of precious metals from materials containing noble metals. These materials are chemically called minerals or scrap. The most precious metals include gold and silver. These two metals have a very strong position in the development of any nation. So, improvements in its refinement process are the topic that most interests alchemists and metal smiths. Therefore, on a commercial scale, methods are employed that are economically manageable and have reduced chances of loss of precious metals during the refining process. The commercial refining process is a multi-step process. The first and most important step is the receipt of the sample. The source of the sample is of vital importance. Many geologists predict the potential percentage of the precious metal in scrap. The sample from that location is delivered to the refining plants. When the sample is received at the refineries, it is weighed with the standardized calibrated b...