11 Sept 2025resource reserve update● Neutral
Vista filed the formal technical report backing its resized, 15,000-tonne-per-day Mt Todd feasibility study.
Announcements, explained
Each one in plain English, with the numbers worked through for a shareholder.
29 July 2025resource reserve update▲ GoodMajor
Vista released a re-sized 15,000-tonne-per-day feasibility study for Mt Todd, cutting initial capital 59% to $425 million versus the 2024 study. It showed an after-tax NPV5% of $1.1 billion and IRR of 27.8% at $2,500 gold, by prioritizing higher grade ore, contract mining and third-party power.
14 Mar 2024resource reserve update▲ GoodMajor
An updated feasibility study showed Mt Todd's value held up despite rising construction costs (initial capital up $138 million) and the new Wheaton royalty, with after-tax NPV actually improving slightly to $1.13 billion.
10 Feb 2022resource reserve update▲ GoodMajor
Vista's first full feasibility study (rather than a preliminary one) for Mt Todd lifted reserves 19% to nearly 7 million ounces and outlined a 16-year mine, with an after-tax NPV of $1.5 billion at $1,800 gold.
28 Oct 2020resource reserve update● Neutral
Vista re-filed the amended Mt Todd technical report from earlier in October to satisfy its SEC disclosure obligations.
9 Oct 2020resource reserve update● Neutral
Vista amended its Mt Todd technical report to correct and clarify some details, without changing the underlying feasibility study numbers.
30 Mar 2020resource reserve update▲ Good
An independent review by GR Engineering confirmed Vista's cost and schedule assumptions for the 2019 Mt Todd feasibility study were reasonable, adding outside validation to the numbers.
15 Oct 2019resource reserve update● Neutral
Vista furnished to the SEC, as Exhibit 99.1, the NI 43-101 technical report for the 50,000 tpd Mt Todd preliminary feasibility study, which it had filed in Canada on October 7, 2019 with an effective date of September 10, 2019.
8 Oct 2019resource reserve update● NeutralMajor
Filed the NI 43-101 technical report behind the September 2019 preliminary feasibility study for Mt Todd - a 50,000 tonne-a-day open pit with 91.9% life-of-mine gold recovery, a US$823 million net present value and a 23.4% return at US$1,350 gold. Vista said it would not take on the debt and dilution of building the mine alone and was looking for a development partner.
13 Sept 2019resource reserve update▲ GoodMajor
An updated feasibility study lifted Mt Todd's projected after-tax value to $823 million (up from $679 million in 2018) on improved gold recovery, while reserves held steady at 5.85 million ounces.
15 Jan 2019resource reserve update▲ Good
More crushing and sorting tests on higher-grade Mt Todd ore samples confirmed the process improvements work even better on richer material, and Vista set a schedule to update its feasibility study by mid-2019.
8 Mar 2018resource reserve update● Neutral
Vista filed the NI 43-101 technical report for its Mt Todd preliminary feasibility study, announced January 24, 2018. The report covers a 50,000 tonne per day base case and a 33,000 tpd alternate case, at US$1,300 gold.
29 Jan 2018resource reserve update▲ GoodMajor
Vista's updated preliminary feasibility study for Mt Todd showed an after-tax NPV5% of $679 million and 20.5% IRR at $1,300 gold, with reserves of 5.85 million ounces, down 0.9% from the 2013 study. Sorting and grinding changes were said to cut costs and raise recovery.
28 Nov 2017resource reserve update▲ GoodMajor
Further metallurgical testing showed Vista's ore-sorting and grinding redesign would boost Mt Todd's gold recovery to about 86%, and the company guided to an updated feasibility study in early 2018.
26 July 2017resource reserve update▲ GoodMajor
Test-sorting of ore samples confirmed Vista could cheaply reject 8-10% of Mt Todd's waste rock before grinding, and the company began updating its feasibility study to incorporate the technology.
3 Mar 2014resource reserve update▲ Good
Vista's Mt Todd development agreement with the Northern Territory government was extended a further three years to December 2018, and the company reported progress on environmental approvals and an updated Quigleys satellite-deposit resource.
5 July 2013resource reserve update● Neutral
Vista filed the formal technical report behind the May 2013 Mt Todd feasibility study.
31 May 2013resource reserve update▲ GoodMajor
A new preliminary feasibility study raised Mt Todd's reserves 44% to 5.9 million ounces of gold and laid out two development options - a bigger 50,000-tonne-per-day project or a smaller, higher-grade 33,000-tonne-per-day alternative.
7 Mar 2013resource reserve update▲ Good
A preliminary economic assessment showed Vista's Guadalupe de los Reyes project in Mexico could be a modest, profitable standalone mine (US$57.3 million after-tax NPV), but Vista said it would keep spending on the project to a minimum for the rest of 2013 to focus on Mt Todd.
13 Feb 2013drilling result▲ Good
Vista reported assays from the final ten 2012 Batman holes at Mt. Todd and the first Snowdrop exploration hole, which found no significant ore-grade mineralization though further drilling was considered warranted. It expected a modest increase in measured and indicated resources from converting inferred resources.
11 Dec 2012resource reserve update● Neutral
Vista also filed the technical report supporting its Guadalupe de los Reyes resource estimate in Mexico.
11 Dec 2012resource reserve update● Neutral
Vista filed the formal NI 43-101 technical report backing the September 2012 Mt Todd resource increase.
23 Oct 2012resource reserve update● NeutralMajor
Vista settled on a two-phase build for Mt Todd - a smaller 30,000-tonne-per-day first stage expandable to 45,000 tonnes per day - to cut initial capital costs, and rescheduled its feasibility work into a preliminary study due Q1 2013 followed by a full feasibility study in Q2.
7 Sept 2012resource reserve update▲ GoodMajor
An updated resource estimate grew the Batman deposit at Mt Todd to just over 7 million ounces of gold measured and indicated, up 17% from a year earlier and 37% above the original 2011 feasibility study.
13 Aug 2012drilling result▲ Good
The last batch of a 48-hole drilling program at Guadalupe de los Reyes in Mexico returned more high-grade gold-silver intercepts, feeding into a resource update and economic assessment due later in the year.
12 July 2012drilling result▲ Good
More drilling results from the ongoing Mt Todd resource-conversion program continued to support the case for a larger project.
7 June 2012resource reserve update● NeutralMajor
Vista enlarged the planned Mt Todd plant to 40,000-45,000 tonnes per day to capture its growing resource, pushing the feasibility study back again to late 2012 or early 2013.
3 Apr 2012resource reserve update● Neutral
Vista delayed the Mt. Todd feasibility study to around the middle of the second quarter of 2012 because final process facility capital and operating costs took longer than expected. It also reported more high-grade Guadalupe de los Reyes drill results and said the Mt. Todd resource update would come in the third quarter.
14 Mar 2012resource reserve update▲ GoodMajor
Encouraged by continued high-grade drill results at depth, Vista decided to study an even larger Mt Todd operation and began building a project team in Australia to develop it.
29 Feb 2012resource reserve update▲ Good
Drilling at the Guadalupe de los Reyes gold-silver project in Mexico returned high-grade hits, including 12.15 g/t gold and 738 g/t silver, and Vista hired Tetra Tech to run a preliminary economic assessment on the project.