Gold costs were about $317 per troy ounce in 2007, but these can vary widely depending on mining type and ore quality; global mine production amounted to 2,471.1 tonnes. After initial production, gold is often subsequently refined industrially by the Wohlwill process which is based on electrolysis or by the Miller process, that is chlorination in the melt. The Wohlwill process results in higher purity, but is more complex and is only applied in small-scale installations. Other methods of assaying and purifying smaller amounts of gold include parting and inquartation as well as cupellation, or refining methods based on the dissolution
Refine S3 Refine S3 The Refine S3 is a Compact CUV produced by JAC Motors under the Refine sub-brand. Originally launched on the 2013 Shanghai Auto Show as the Heyue S30 under the Heyue sub-brand, the compact crossover was quickly rebranded to Refine S3 shortly after during the 2014 Beijing Auto Show. Pricing of the Refine S3 was revealed later during the 2014 Chengdu Auto Show with prices ranging from 65,800 yuan to 84,800 yuan. The facelifted Refine S3 crossover was launched on the 2016 Chengdu Auto Show in China. The 2016 facelift includes redesigned grilles, triangle shaped fog lights, new headlights,