"The two nominated mining areas illustrate different manifestations of the ore and deposits and, subsequently, of the mining strategies implemented to obtain gold and silver." - Aikawa-Tsurushi Gold and Silver Mine: "This area is formed by the Tsurushi Silver Mine and the Aikawa Gold and Silver Mine". (AB Ev)

Zacatecas was one of the principal centres of silver mining from the early Spanish period until the 20th century (OUV crit ii)

"The region of Tarnowskie Góry is known for its historic lead ore mining. The ore mined here was galena, which is source of lead and silver. " (wiki) + "At that time, an almost insatiable demand for lead had been triggered by an invention in the chemical extraction of silver from copper ores, that required lead as a smelting agent. This breakthrough in the latter part of the fifteenth century brought European silver output over the next century to unprecedented levels" (AB ev)

"The remains of the Cistercian monastery of Walkenried and the mines of the Upper Harz bear testimony to the first attempts to systematically extract non-ferrous metal ores (including silver, lead, tin and copper) in Europe, and to develop water-management systems for this purpose." (Official description)

Yerranderie (Colon Peak Mine and Silver Peak Mine shaft entrances just within the inscribed area)
See www.yerranderie.com

"Silver-bearing ores have been worked on the Bere Ferrers or Birland peninsula, between the Tamar and Tavy rivers south of Tavistock, for nearly six centuries. By the middle of the 19th century there were at least a dozen mines, some consolidated into larger setts."
See www.soc.staffs.ac.uk

Chalchihuites, Guanajuato, San Luis Potosí