Metallurgical assay and the U.S. Mint continue to produce precious metal bullion coins for collectors and investors. The precious metal purity and content of these coins is guaranteed by the respective mint or government, and, therefore, the assay of the raw materials and finished coins is an important quality control. In the UK, the Trial of the Pyx is a ceremonial procedure for ensuring that newly minted coins conform to required standards. Metallurgical assay A metallurgical assay is a compositional analysis of an ore, metal, or alloy. Some assay methods are suitable for raw materials; others are more appropriate for finished goods.
Trial of the facts otherwise; it is "limited to ensuring that the interference with the liberty of the defendant consequent upon whatever order might be made following an adverse finding can be justified by reference to what can be proved about what he or she did, even if intention might have been clouded by delusion or other incapacity." Trial of the facts Under the law of England and Wales regarding insanity and unfitness to plead, once a court has determined that the defendant is subject to a disability that prevents their trial progressing, there may be a "trial of the facts" in which the