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Australia
Bootu Creek Mine

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 Location:
107 km N from Tennant Creek, Northern Territory, Australia

  Regional Office:
Level 3, 8 Colin Street
West Perth
Western Australia, Australia
6005
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Manganese
Mining Method
  • Truck & Shovel / Loader
Processing
  • Dense media separation
Mine Life2021
As a result of global slow down, put into voluntary administration in 2016. Exited administration in Q3 2016. Restarted mining in Q1 2017.
Latest NewsBootu Creek mining remains suspended following fatality     September 26, 2019


Owners & OPERATOR

Source: p. 8, 16
CompanyInterestOwnership
OM Holdings Ltd. 100 % Indirect
OM (Manganese) Ltd. (operator) 100 % Direct
OM (Manganese) Ltd (“OMM”) is a wholly owned subsidiary of the Company and one of the Group’s core businesses with its main activities being exploration and mining of manganese ore at the Bootu Creek Mine.

Deposit Type

  • Stratabound (SMS)


Summary:

The Bootu Creek manganese deposits are strata-bound, located at the contact between the underlying dolomite-siltstone Attack Creek Formation and the overlying ridge forming sandstone of the Bootu Formations in the Tomkinson Group, within the Ashburton Province of the Palaeozoic Tennant Creek Inlier.

The mineralised horizon is folded around the gentle NNW plunging Bootu Syncline, can be traced 24km and dips around 30o towards the fold axis.

The manganese mineralisation is located in shallow marine sediments, which can locally retain a relic stromatolite texture, and is supergene enriched within a deeply weathered profile.

Ore widths vary from 3m to 15m and ore mineralogy consists predominantly of Pyrolusite and Cryptomelane in a silica rich gangue within the supergene zone, above a Rhodochrosite and Braunite unweathered zone at depths of greater than 90 m from surface.


Mining Methods

  • Truck & Shovel / Loader


Summary:

All current and planned mining is by open pit mining methods. Open pit slope angles, determined by an Independent Geotechnical Consultant, are at an overall angle, including berms, of 45o to 55o for hanging wall and end walls, and with footwall batter angles not exceeding the local bedding planes.

Mining at the Bootu Creek Mine is carried out using a conventional open-cut method of mining, blasting and excavation using hydraulic excavators and dump trucks.

The mining strategy was centred around two fleets focussed on the east limb deposits of Gogo, Shekuma and Chugga Far North.

Mining is now completed in the Gogo, Chugga South and Chugga North pits on the east limb and mining commenced on the Tourag pit on the west limb late in 2018.

For 2019/2020, mining is/will continue on the east limb in Chugga Far North and with a planned cutback in Shekuma. With mining on the west limb continuing in Tourag, commencing in Yaka and planned cutbacks in Masai, the mining operational requirement will increase to three digger fleets and 10 haul trucks. This will ensure a sustainable ore supply to the ROM as well as the building up of significant ROM stocks, de-risking the wet season weather impacts on the Bootu Mine operation.

Higher grade ores from the Shekuma and Yaka deposits and moderate grades from Tourag, Masai and Chugga Far North deposits, will form the basis of plant feed for the next 2 years maintaining the current processing plant mass yields.


Crushing and Grinding


Processing

  • Dense media separation

Flow Sheet: Subscription required

Summary:

The Bootu Creek plant is a relatively simple crushing and screening operation, followed by heavy media separation (HMS) to concentrate the manganese minerals. The plant is comprised of two separately built processing plants. The original primary processing plant (PPP) was commissioned in 2006 and processes the Run of Mine (ROM) ore while the secondary processing plant (SPP) commissioned in December 2009 abuts the PPP and selectively processes drum plant rejects and washed fines from the PPP and previously stockpiled drum plant rejects.

The PPP was designed to produce a nominal 550,000 tonnes of product per annum, comprising about 420,000 tonnes of lump and about 130,000 tonnes of fines. Numerous capital upgrading and improvements increased its production capacity to approximately 800,000 tonnes of product per annum. With the commissioning of the SPP in 2009, the combined production capacity from the two plants can approximate 1 million tonnes per annum dependent upon the cha ........

Recoveries & Grades:

CommodityParameter201920182017201520142013
Manganese Head Grade, % 20.521.921.322.522.521.8
Manganese Concentrate Grade, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityUnits20192018201720152014
Manganese dmt  ......  Subscription required  ......  Subscription required656,149760,870890,337
All production numbers are expressed as concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20192018201720152014
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required5,417,733 bcm7,398,605 bcm
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required1,918,137 dmt2,043,786 dmt
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Annual production capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGrade
Proven 0.92 Mt Manganese 20.77 %
Probable 8.01 Mt Manganese 14.66 %
Proven & Probable 8.93 Mt Manganese 15.29 %
Measured 0.97 Mt Manganese 22.38 %
Indicated 9.06 Mt Manganese 15.88 %
Measured & Indicated 10.03 Mt Manganese 16.51 %

Financials:

Units20182017
Revenue M AUD  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 23, 2020
....................... Subscription required ....................... Subscription required Subscription required May 23, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
Subscription required - Subscription is required.

News:

NewsDate
Bootu Creek mining remains suspended following fatality September 26, 2019

Aerial view:

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