In the field of extractive metallurgy, mineral processing, also known as ore dressing, is the . The process of panning and sifting for gold uses both of these methods. Various devices known as 'buddles' were used to take advantage of this.
Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. Gold mining from alluvium ores was once achieved by techniques.