Metallic mining · DIA
Modificación Túnel de Prospección Sector Manquehua
Sociedad Contractual Minera Tres Valles — Salamanca · Coquimbo
Approval
Sep 17, 2008
RCA 283/2008 · Aprobado
Site
Tres Valles
5 environmental approvals at this site
File
- Instrument
- Environmental impact declaration (DIA)
- Project type
- Minera metálica
- Company
- Sociedad Contractual Minera Tres Valles
- Comunas
- Salamanca · Coquimbo
- Assessed in
- Región de Coquimbo
- Coordinates
- -31.7422, -71.0209
- Site in the register: Tres Valles
Timeline
- Sep 17, 2008Environmental approval (DIA)
Enforcement at the site
- Inspections65 · latest in 2026
- Sanction proceedings3 · latest in 2025
- Compliance programmes2 · latest in 2019
- Provisional measures2 · latest in 2024
These cover the whole site, not this project alone.
Other approvals at Tres Valles
4 more approvals at the same supervised unit.
| Project | Approval | Declared investment | Source |
|---|---|---|---|
| Continuidad Operacional Minera Tres Valles | Jan 14, 2026RCA 2026040015 | — | SMA |
| Aprovechamiento de Ripios para Mejoramiento de Caminos de MTV | 2019RCA 148/2019 | — | SMA |
| Proyecto Minero Tres Valles | Nov 24, 2009EIA · RCA 265/2009 | US$ 102 M | SMA |
| Proyecto Túnel de Prospección Sector Manquehua | Feb 3, 2007DIA · RCA 12/2007 | US$ 5 M | SMA |
Source: public registers of Chile's environmental regulator (SMA). Investment is the one the holder declared in the environmental assessment, in dollars of that year.