Mercury silvering methods. The technique was also used in Asia, for example "tokin" plating in Edo-period Japan. Mercury silvering Mercury silvering or fire gilding is a silvering technique for applying a thin layer of precious metal such as silver or gold (mercury gilding) to a base metal object. The process was invented during the Middle Ages and is documented in Vannoccio Biringuccio's 1540 book "De la pirotechnia". An amalgam of mercury and the precious metal is prepared and applied to the object which is then heated, sometimes in oil, vaporizing most of the mercury. The technique is dangerous since mercury is highly
Viet Mercury other hand, Harris sent a letter to competing newspapers implying that they had stolen his issues from news racks. Within months of "Viet Mercury"s publication, "Vietnam Family" () and another Vietnamese paper failed. "Viet Mercury" became profitable in 2000. With circulation rising to 35,000, "Viet Mercury" began publishing daily in March 2003. Unlike its competitors, "Viet Mercury" operated like a mainstream news outlet, with a full-time staff that produced original reporting and had access to the "Mercury News" Hanoi bureau. An investigative series by "Viet Mercury" uncovered doctors embezzling money from recent immigrants, leading to the arrests of several doctors.