A gold-processing plant is a facility where gold is extracted from raw materials. There are various synonyms for the term, depending on the specific function and the type of plant. A gold mine processing plant is a facility where gold extracted from mines is further processed through various technologies and techniques. A gold mill is a type of gold-processing plant that specializes in grinding, sorting, and refining gold ore. A gold refinery is a facility that purifies gold bullion into higher-quality bars or coins. Other synonyms for the phrase include a gold extraction plant, a gold smelter, and a gold concentrator. Each term refers to a distinctive aspect of the gold-processing industry, and they are often used interchangeably.