Amerigo Resources Ltd.

Notable vs. Peers

• Financials score of 6.9/10 is stronger than the peer average of 5.4/10.
• All-in sustaining cost of $1.74/lb is 29% lower than the peer producer average of $2.45/lb.

Lifecycle Milestones

1. Permit granted

   Reached — date not disclosed · Per MVC's own official history page: Codelco's El Teniente Division put fresh-tailings processing out for tender in 1988; MVC won the contract in 1989, securing the processing rights that are this arrangement's functional equivalent of a mining permit (MVC is a tailings-reprocessing contractor to Codelco, not a mineral-title holder). Amerigo itself only acquired MVC in 2003, long after this contract and the plant it enabled. Exact day not found. · Source
2. Construction decision (FID)

   Reached — date not disclosed · Same 1989 event as PERMIT_GRANTED above -- MVC winning the Codelco tender was simultaneously the grant of processing rights and the trigger for building the plant; no separate board/FID announcement distinct from the contract award was found for this small contractor entity formed specifically to fulfill it. · Source
3. Construction start

   Reached — date not disclosed · Amerigo, through its Chilean subsidiary Minera Valle Central (MVC), itself built the CAUQUENES EXPANSION -- the capital project that gave MVC access to the historic Cauquenes tailings deposit alongside the fresh tailings it already processed from Codelco's El Teniente. Construction of Cauquenes Phase One ran across 2014-2015: MVC signed the agreement with Codelco granting the right to process the Cauquenes historic tailings in April 2014, Chilean environmental approval was received in 2014, MVC commenced processing Cauquenes tailings in September 2015 (announced 24 September 2015, at ~30,000 tonnes per day, ramping to 60,000 tpd in Q4 2015), and per Amerigo's own operations page 'The Cauquenes Phase One project was completed in December 2015'. Cauquenes Phase Two was subsequently completed in December 2018 (same page). achievedDate left null, DELIBERATELY, AND THE REASONING IS RECORDED RATHER THAN THE DATE GUESSED: no discrete construction-commencement announcement was found. Amerigo's 24 September 2015 start-up release describes a construction period of approximately 5-and-a-half months ending at that start-up, which implies a start around April 2015, but that is arithmetic on a disclosed duration, not a disclosed date, and the underlying release PDF could not be fetched directly this pass to confirm the duration verbatim. The row is therefore recorded on the schema's 'reached, date not disclosed' convention -- the same convention this miner's own PERMIT_GRANTED, CONSTRUCTION_DECISION and FIRST_PRODUCTION rows already use, all four of which are null-dated. ANCHOR DIVERGENCE, DISCLOSED: ARG's existing milestone rows all anchor to the ORIGINAL MVC plant -- Codelco put fresh-tailings processing out to tender in 1988, MVC won the contract in 1989, operations commenced 1990 -- built by MVC under former Codelco-affiliated management more than a decade before Amerigo acquired MVC in 2003. Task #430 correctly found no construction-start date between the 1989 contract award and 1990 start-up and recorded a checked gap. Cauquenes is the build Amerigo itself sanctioned, financed and completed, so it is the asset on which this gate is answerable. SUPERSEDES a prior Task #430 RESEARCHED_UNKNOWN checked-gap row (note: "MVC's own history page gives 1989 (Codelco contract win) and 1990 (operations commence) but no distinct date for when plant construction itself began between those two points"). Sourcing: Amerigo's own operations page (fetched directly this pass) for the Phase One December 2015 and Phase Two December 2018 completion dates. Corroborated by Mining Technology, 'Amerigo Resources begins tailings processing from Cauquenes deposit' (27 September 2015, fetched directly), which confirms Phase 1 'nearing completion' with Cauquenes tailings processing started at ~30,000 t/day ramping to 60,000 tpd in Q4 2015; and by the April 2014 Codelco Cauquenes agreement and 2014 environmental approval reported in Amerigo's NI 43-101 filings coverage. · Source
4. First pour / production

   Reached — date not disclosed · Per MVC's own history page, operations commenced in 1990, producing low-grade concentrate via cascade flotation of fine-fraction fresh tailings. Exact day not found. · Source
5. Commercial production

   Reached — date not disclosed · Genuinely reached, but no single Amerigo-era date exists: Minera Valle Central (MVC, Chile) has processed copper tailings from Codelco's El Teniente mine continuously since 1992, established under former Codelco-affiliated management in 1990/91 -- predating Amerigo Resources' own acquisition of MVC in 2003 by over a decade. Matches the Hemlo Mining Corp precedent (batch4): the operation predates the current company's ownership under a different prior operator, no single unambiguous company-era date. This row was missing entirely prior to 2026-08-21 -- a genuine data gap, not a stage error; Miner.stage was already correctly PRODUCTION. · Source

Milestones are recorded only from a company's own dated disclosure. A milestone with no date shown is one we can confirm was reached but for which no date was disclosed — we don't estimate one. "Not yet reached" means exactly that, not that a date is missing. An "Expected" line likewise only ever reflects the company's own guidance (e.g. a study or permit decision targeted for a stated quarter) — most not-yet-reached milestones have none, and that absence means no such guidance has been disclosed, not that one is overdue.

A relative ranking of how closely this company matches the profile of juniors that have actually been acquired — not a probability, and not a reason to buy. Acquisitions are rare: only a few dozen significant deals happen a year across a universe of thousands of juniors, so even a high score here describes a long shot. The strongest signal the underlying research identifies — whether a major already holds a JV, earn-in, or 5–19.9% strategic stake — isn't tracked yet and is absent from this score.