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Australia
Handlebar Hill Mine (Mount Isa Zinc Operation)

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 Location:
18 km N from Mount Isa, Queensland, Australia

  Address:
Private Mail Bag 6
Mount Isa
Queensland, Australia
4825
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
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  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeOpen Pit
Commodities
  • Zinc
  • Lead
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
The mine was placed in care and maintenance in July 2014.


Owners

 
CompanyInterestOwnership
Glencore plc. 100 % Indirect
Mount Isa Mines Ltd. 100 % Direct

Deposit Type

  • SEDEX


Summary:

Lead-zinc-silver mineralisation occurs in galena and sphalerite-rich bedding parallel horizons in dolomitic and variably carbonaceous pyritic shales and siltstones.

The Handlebar Hill Open Cut resource is up dip of and additional to the George Fisher South resource.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Drilling and blasting practices are conducted at open cut operations to fragment the rock surrounding the ore. Ore from the open cut mines is loaded into dump trucks.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

Ore mined is roughly crushed on site, then trucked to the Mount Isa mills for processing.

First, the ore is ground into a fine dust via a series of ball mills. This dust is then mixed with water and reagents in our zinc-lead concentrator’s flotation circuit. The reagents help us to separate the valuable mineral content from waste rock. Air is forced through the slurry creating bubbles, which float to the surface and attract and bind to the zinc or lead particles. The glossy, mineral-laden “froth” is then skimmed off the top and dried. What remains once the water content of the froth has evaporated is zinc or lead concentrate. Our zinc concentrates are sold in the domestic market and exported overseas, while our lead concentrate undergoes further processing and smelting on site to become crude lead, or lead bullion.

Lead concentrate is mixed with high grade silica, limestone and copper slag, a by product of our copper smelting operations. These ingredients are kno ........


Combined production numbers are reported under Mount Isa Zinc Operation


Reserves at December 31, 2018:

CategoryOreTypeTonnage CommodityGrade
Proven Oxide 0.5 Mt Zinc 0.4 %
Proven Oxide 0.5 Mt Lead 8.5 %
Proven Oxide 0.5 Mt Silver 89 g/t
Measured In-Situ (OP) 1.6 Mt Zinc 7.8 %
Measured Oxide 0.5 Mt Zinc 0.4 %
Measured In-Situ (OP) 1.6 Mt Lead 2.6 %
Measured Oxide 0.5 Mt Lead 8.5 %
Measured In-Situ (OP) 1.6 Mt Silver 41 g/t
Measured Oxide 0.5 Mt Silver 89 g/t
Indicated In-Situ (OP) 3.6 Mt Zinc 6.1 %
Indicated Oxide 0.1 Mt Zinc 0.4 %
Indicated In-Situ (OP) 3.6 Mt Lead 2 %
Indicated Oxide 0.1 Mt Lead 4.1 %
Indicated In-Situ (OP) 3.6 Mt Silver 35 g/t
Indicated Oxide 0.1 Mt Silver 65 g/t
Measured & Indicated In-Situ (OP) 5.2 Mt Zinc 6.6 %
Measured & Indicated Oxide 0.6 Mt Zinc 0.4 %
Measured & Indicated In-Situ (OP) 5.2 Mt Lead 2.2 %
Measured & Indicated Oxide 0.6 Mt Lead 7.8 %
Measured & Indicated In-Situ (OP) 5.2 Mt Silver 37 g/t
Measured & Indicated Oxide 0.6 Mt Silver 85 g/t
Inferred In-Situ (OP) 0.8 Mt Zinc 5 %
Inferred In-Situ (OP) 0.8 Mt Lead 2 %
Inferred In-Situ (OP) 0.8 Mt Silver 30 g/t


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 22, 2021
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2018
Year-end Mineral Reserves 2017
Corporate Presentation 2016
Year-end Mineral Reserves 2016
Other 1995
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Aerial view:

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