- Solok Regency with its capital in Arosuka
- South Solok Regency with its capital in Padang Aro
- Tanah Datar Regency with its capital in Batusangkar
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Locations of Dutch-Era Treasures in West Sumatra
According to various sources, West Sumatra has potential for class A, B, and C mining materials. Class A mining materials, namely coal, are found in the city of Sawahlunto. Meanwhile, Class B mining materials, consisting of mercury, sulfur, iron sand, copper, lead, and silver, are distributed throughout the regencies of Sijunjung,
Dharmasraya, Solok, South Solok, Lima Puluh Kota, Pasaman, and Tanah Datar.
Class C mining materials are distributed throughout all regencies and cities, consisting primarily of sand, stone, and gravel.
West Sumatra Province contributes approximately 3.58% of Indonesia's estimated gold reserves.
The areas of Padang Aro, Solok, especially South Solok, Sawulontho, and many other areas contain gold.
It is a general rule that gold is abundant on both sides of the Bukit Barisan Mountains, especially alluvial gold.
Several areas, such as Sulit Air, Sibarambang, Sungai Sumpahan, Lanawang, and Pinti Kayu Gadang, contain copper deposits with potential gold content. These areas are currently under exploration.
West Sumatra is not an easy place for companies to mine.
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Locals are known to protest after permits are issued and production reaches significant levels, not before.
As a result, many companies start mining in West Sumatra but then cease operations.