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United States
Antler Project

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 Location:
237 NW from Phoenix, Arizona, United States

  Project Contacts:
Unit 24-26, Level 3 22 Railway Road
Subiaco
Western Australia, Australia
6008
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  • Overview
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  • Mining
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  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StagePreliminary Economic Assessment
Mine TypeUnderground
Commodities
  • Copper
  • Zinc
  • Lead
  • Silver
  • Gold
Mining Method
  • Longhole stoping
  • Paste backfill
Mine Life10 years (as of Jan 1, 2022)
Latest NewsNew World Intersects 10.7m @ 13.7% Cu-Eq in Antler South Shoot     December 5, 2022


Owners

Source: p. 4
CompanyInterestOwnership
New World Resources Ltd. 100 % Indirect
The Antler Deposit outcrops over 750m of strike within two patented mining claims. One of New World’s US-subsidiaries owns a 100% interest in these two patented claims (that cover a total of 40 acres) – where both the surface rights and the mineral rights are privately-owned. New World also holds a 100% interest in an additional 81 unpatented mining claims on adjoining federal lands (covering 1,365 acres), where mineral exploration and mining is overseen by the Bureau of Land Management (“BLM”).

Contractors

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Deposit Type

  • VMS


Summary:

The Antler Deposit is a high-grade, polymetallic, volcanogenic massive-sulphide (VMS) Cu-Zn-Pb-Ag-Au deposit. Mineralisation outcrops at surface over 750m of strike. The Deposit dips to the west- northwest at around 60 degrees.

While mineralisation is laterally and vertically continuous over the 500m of strike that has been drill-tested to date, to depths >700m, several thicker, steeply plunging “shoots” of high-grade mineralisation are evident. This thickening is interpreted to be due to structural repetition – primarily folding; while faults may also locally control thicker mineralisation.

Copper is the most valuable metal present, but it is anticipated that significant revenue will also be derived from zinc, silver, lead and gold.


Mining Methods

  • Longhole stoping
  • Paste backfill


Summary:

New World has made the deliberate decision to pursue underground-only mining operations at Antler (i.e., with no starter open-pit). This development approach will minimise the Project’s surface footprint, thereby minimising its impact on the environment and the local community.

An additional benefit of this approach is that all surface disturbances are likely to be constrained to privately owned land, which is expected to help streamline the mine permit approval process.

The preliminary mine design contemplates developing a single 5.0m x 5.0m decline. Long-hole stoping with paste fill would then be utilised to extract 7.3Mt of the 7.7Mt November 2021 Resource. The very high (95%) recovery rate is attributable to (i) the consistently high grades of the mineralisation at the Antler Project; and (ii) the lateral and vertical continuity of the mineralisation.

Longhole stoping with paste backfill has been selected as the primary mining method. The stopes are to be mined in a longitudinal sequence retreating from hangingwall to footwall.

Ultimately a NSR cut-off of $70/t with 25m-high stopes was selected as the base case scenario, as MSO runs with higher NSR values tended to pull in excessive amounts of waste, especially when two parallel mineralized lodes were present.

Minimum and maximum stope widths of 2.5m of 20.0m, respectively, were ascribed.

An additional 2.0Mt of material would be mined through dilution – res ........


Crushing and Grinding
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Processing

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Summary:

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Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Copper Metal in concentrate M lbs 34300
Copper Concentrate kt 71457
Zinc Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required
Lead Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required
Lead Concentrate kt  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate oz  ......  Subscription required  ......  Subscription required
Gold Metal in copper conc. oz  ......  Subscription required  ......  Subscription required
Copper Equivalent Metal in concentrate t  ......  Subscription required  ......  Subscription required

Operational Metrics:

Metrics
Daily milling capacity  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Tonnes milled, LOM  ......  Subscription required
Annual milling capacity  ......  Subscription required
Annual milling rate  ......  Subscription required
Annual ore mining rate  ......  Subscription required
* According to 2022 study.
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Reserves at November 5, 2021:
Mineral Resource Estimate for the Antler Copper Deposit above a 1.0% Cu-Equivalent cut-off grade.

CategoryTonnage CommodityGrade
Total Resource 7,723,280 t Copper 2.23 %
Total Resource 7,723,280 t Zinc 5.32 %
Total Resource 7,723,280 t Lead 0.9 %
Total Resource 7,723,280 t Silver 28.8 g/t
Total Resource 7,723,280 t Gold 0.18 g/t
Total Resource 7,723,280 t Copper Equivalent 3.9 %

Commodity Production Costs:

CommodityUnitsAverage
C1 cash costs Copper Equivalent USD  ......  Subscription required&nbs
C1 cash costs Copper USD  ......  Subscription required *†
Assumed price Lead USD  ......  Subscription required&nbs
Assumed price Zinc USD  ......  Subscription required&nbs
Assumed price Copper USD  ......  Subscription required&nbs
Assumed price Silver USD  ......  Subscription required&nbs
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2022 study / presentation.
† Net of By-Product.
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Operating Costs:

Units2022
UG mining costs ($/t milled) USD 52 *
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2022 study.
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2022 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
UG OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 175.2
G&A costs $M USD 139.1
Total OpEx $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 7% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 7, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Jul 11, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Preliminary Economic Assessment 2022
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News:

NewsDate
New World Intersects 10.7m @ 13.7% Cu-Eq in Antler South Shoot December 5, 2022

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