Northwire Canada EditionMonday, August 31, 2026
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GOLD 4529.90 −2.9% SILVER 67.79 −3.5% COPPER 6.66 −0.5% OIL 83.40 −0.2% PALLADIUM 1428.60 +5.4% SAE 0.520 +4.0% ZEN 0.770 +0.0% WGLD 0.130 +13.0% AEM 286.76 −3.9% SAG 1.32 −4.3% GSVR 0.475 −5.0% CRI 0.050 −9.1% TMQ 5.04 −4.2% BTO 7.85 −3.0% HBM 40.78 −3.0% EFR 20.38 −6.5% SF 0.365 −4.0% SPX 0.115 +0.0% CQR 0.060 +20.0% IVS 0.310 +5.1% CNC 1.44 −2.7% GOLD 4529.90 −2.9% SILVER 67.79 −3.5% COPPER 6.66 −0.5% OIL 83.40 −0.2% PALLADIUM 1428.60 +5.4% SAE 0.520 +4.0% ZEN 0.770 +0.0% WGLD 0.130 +13.0% AEM 286.76 −3.9% SAG 1.32 −4.3% GSVR 0.475 −5.0% CRI 0.050 −9.1% TMQ 5.04 −4.2% BTO 7.85 −3.0% HBM 40.78 −3.0% EFR 20.38 −6.5% SF 0.365 −4.0% SPX 0.115 +0.0% CQR 0.060 +20.0% IVS 0.310 +5.1% CNC 1.44 −2.7%
Other Routine +

Capstone Copper Submits Environmental Permit for Mantos Blancos Phase II

Capstone advances its Mantos Blancos Phase II EIA submission to support long-term growth while maintaining a focus on near-term execution.

By The Northwire Desk — AI Analysis Jun 19, 2026 · 17:38 CS · 14.61 Capstone Copper Corp.
Executive Summary
  • Capstone Copper has formally submitted the Mantos Blancos Phase II Project to the Environmental Impact Assessment (EIA) process in Chile.
  • The expansion targets a sulphide concentrator throughput increase from 20,000 tpd to at least 27,000 tpd.
  • A pre-feasibility study (PFS) is expected in Q3 2026, with construction taking approximately one year post-approval.
  • Expanded production is targeted for 2030–2031, supported by a new in-pit tailings storage facility.
Material Impact
  • This is a Routine - Positive regulatory milestone. The EIA submission is a necessary step for a project not expected to produce until 2030–2031. It does not alter near-term production, cost, or cash flow profiles. The market's reaction (price appreciation from ~$10.84 post-Q1 earnings to $15.01) reflects broader optimism on the MBO ramp-up and Santo Domingo progress rather than this specific permit submission.
CS · Price
Company Overview
  • Capstone Copper operates four producing assets: Mantoverde and Mantos Blancos in Chile, Pinto Valley in the USA, and Cozamin in Mexico.
  • Mantoverde is a high-grade sulphide and oxide operation, 70% owned by Capstone (30% by Mitsubishi Materials).
  • Mantos Blancos is a large-scale sulphide and oxide mine with significant copper and gold by-product credits.
  • Pinto Valley is an open-pit copper mine facing water management challenges due to Arizona drought conditions.
  • Cozamin is a smaller sulphide operation in Mexico known for low cash costs and high silver by-product credits.
Read the original news release →

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