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Australia
Endeavor Mine

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 Location:
39 km N from Cobar, New South Wales, Australia

  Address:
Via Louth Road
P O Box 109
Cobar
New South Wales, Australia
2835
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Fax+61-2-6830-2557
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
  • Silver
Mining Method
  • Block caving
Production Start...
The Endeavor mine was previously classified as production, however it was placed on care and maintenance in December 2019 and has not since restarted, as such the Company has reclassified it to development stage properties.

In October 2020 Sandfire Resources Ltd. (“Sandfire”) announced a farm-in agreement with CBH Resources Ltd giving Sandfire the right to earn a 51% interest in the mine by spending $10 million on exploration. Sandfire can increase its interest to 75% by spending an additional $10 million on exploration, or can acquire 100% for a payment of $30 million. The mine is undergoing an exploration program by Sandfire which is evaluating options for a potential restart.


Owners

Source: p. 2
CompanyInterestOwnership
Toho Zinc Co. Ltd. 100 % Indirect
CBH Resources Limited (“CBH”) is the operator of the Endeavor mine on which Metalla Royalty & Streaming Ltd. owns a stream on 100% of the by-product silver (“Ag”) produced from the Endeavor mine.

Contractors

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Deposit Type

  • Vein / narrow vein


Summary:

The Endeavor zinc-lead-silver mine is located 43km NNW of Cobar. The mine contains two styles of mineralisation: above about 900m depth an irregular sub-vertical sheet is hosted by a turbidite sequence and broadly coincides with an anticline axial plane; at the bottom of this sheet mineralisation bifurcates into grossly concordant zones.

The Endeavor mineralisation is contained within the Cobar Basin, which is in turn part of the Lachlan Fold Belt. Basement rocks include Ordovician sediments and Silurian granitic rocks. The basin contains mainly siliciclastic sediments with minor volcanic rocks and carbonates. Sedimentation continued from the Late Silurian until the Early Devonian. Polymetallic mineralisation within the Cobar Basin is thought to have coincided with a period of basin compression and folding (Lawrie and Hinman 1998). The mineralisation is largely discordant and vein or replacement in form. It is associated with silicic, carbonate and chlorite alteration. Most of the major known mineral deposits, including Endeavor, CSA, Peak and Hera are located along a linear structural corridor at least 200km in length.

High-grade massive sulphide mineralisation at Endeavor is enveloped by sulphide stringers, which are in turn enveloped by siderite alteration. The halo of siderite alteration extends for several tens of metres away from sulphide mineralisation and consists of 1 to 2mm diameter clots that preferentially replace sandy beds. Chloritic alte ........


Mining Methods

  • Block caving


Summary:

The leases form a contiguous block of 10,121 acres in size and expire between 2019 and 2027. The mine employs bulk mining methods.


Crushing and Grinding


Processing

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Summary:

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Production:
Reported 2017 production and financial results include operations through May 2017 in accordance with the terms of the sale agreement.

Production 2018 includes attributable silver oz. from the Endeavor silver stream that were produced, shipped and provisionally invoiced during June and July 2017, where the Metalla Royalty & Streaming Ltd. is entitled to the associated trade receivable amounts.

CommodityProductUnits2018201720162015
Silver Payable metal koz 502107248629
Zinc Concentrate kt  ......  Subscription required
Lead Concentrate kt  ......  Subscription required
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Operational Metrics:

Metrics201720162015
Tonnes milled 133,904 tons of ore219,430 tons of ore767,314 tons of ore

Reserves at December 31, 2016:

CategoryTonnage CommodityGradeContained Metal
Proven 476,000 tons Silver 2.48 oz/ton 1,181,000 oz
Probable 753,000 tons Silver 1.92 oz/ton 1,449,000 oz
Proven & Probable 1,229,000 tons Silver 2.14 oz/ton 2,630,000 oz
Measured 5,697,000 tons Silver 1.95 oz/ton 11,115,000 oz
Indicated 7,845,000 tons Silver 2.18 oz/ton 17,085,000 oz
Measured & Indicated 13,542,000 tons Silver 2.08 oz/ton 28,200,000 oz

Commodity Production Costs:

CommodityUnits201720162015
Total cash costs (sold) Silver USD 6.96 / oz   6.56 / oz   5.72 / oz  

Financials:

Units2016
Operating Cash Flow M USD 0.2  



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2022
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Staff:

EmployeesTotal WorkforceYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Quarterly Report 2022
................................... Subscription required 2021
Annual Report 2018
Management Discussion & Analysis 2018
Annual Report 2017
Annual Report 2016
Press Release 2016
Press Release 2016
Year-end Mineral Reserves 2016
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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