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AUS TIN MINING LTD - Corporate Spotlight

Aus Tin Mining is focussed on the delivery of metals critical to future energy demands -... Aus Tin Mining is focussed on the delivery of metals critical to future energy demands - specifically tin, cobalt and nickel. Aus Tin Mining operates the high-grade Granville Tin Project in TAS, is developing the world class Taronga Tin Project in NSW and is exploring for nickel-cobalt in QLD.More

Corporate Spotlight

Aus Tin Mining is focussed on the delivery of metals critical to future energy demands - specifically tin, cobalt and nickel. Aus Tin Mining operates the high-grade Granville Tin Project in TAS, is developing the world class Taronga Tin Project in NSW and is exploring for nickel-cobalt in QLD.
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ANW Enters Lachlan Fold Belt in NSW

VIDEOS

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The Market Herald Bulletin: Aus Tin Mining Enters Lachlan Fold Belt in NSW - 16th April 2020








PRESENTATION

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OPERATIONS UPDATE

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Operations Update for Granville and Taronga

ASX Announcement 20 September 2019 


Highlights

  • The Company is to undertake a strategic review of the Granville operation following a disruption to mining activities. 
  • Interim program of drilling and metallurgical test work to be undertaken Taronga to progress data for future feasibility work.   
  • Letter of funding support received from the Company’s largest shareholder, DGR Global Ltd.


The Directors of Aus Tin Mining Limited (the Company) wish to provide the following update in relation to the Granville Tin Mine on the west coast of Tasmania, and the Taronga Tin Project (Taronga) in northern NSW. 


Granville Tin Mine (TAS) 

Notwithstanding mining operations at the Granville East Mine have been on an improving trendline, transmission problems with the mine truck necessitated it be transported to Launceston earlier this week for repairs.  This follows a recent failure of the 50‐tonne mine excavator which the Company has now been advised could take up to six weeks to repair.  Whilst a replacement 20‐tonne hire excavator has enabled the continuation of normal crushing operations, the loss of both the truck and mine excavator hasimpacted the Company’s ability to productively continue its mining operations and delivery of ore to the crusher and processing plants for several weeks.


The Company has decided to therefore utilise this period to undertake a strategic review of Granville in order to determine the most economically efficient means of extracting value from the project. This will inevitably necessitate a period during which operations will be reduced or even suspended, and based on the outcome of the review, also while any appropriate restructure is carried out.  The strategic review is expected to take a number of weeks and the Company will provide a further update during the week of 7th October 2019.  During this period costs for the mine are being reduced and staff requested to take annual leave.


The disruption to mining activities occurs at a time when the highest grade ore sampled to date is ready for extraction (Figure 1) and when pre‐concentrate production at the plant had been improving (Figure 2), albeit that it had not yet achieved the target production rate for final concentrate.  Final concentrate that has been produced and bagged has been independently sampled this week in preparation for a sale under the Traxys off‐take agreement.   


CEO Peter Williams said “the failure of key mining equipment at a time production at the plant was improving is clearly unfortunate, but the resulting window provides an opportunity to critically review the project.  The Company has invested significantly in Granville but it is yet to achieve selected KPIs,so changes are required and the strategic review is intended to identify these.”  


Figure 1 – Sketch of Granville East Mine and recent drill hole sampling results (assays greater than 1%Sn) 

Figure 2 – Average daily preconcentrate production (updated graph from ASX Announcement of 23 August 2019) 


Click here to view the full announcement

PRODUCTION IMPROVEMENTS AT GRANVILLE TIN

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Aus Tin Mining Limited (ASX:ANW) 

ASX Announcement 23 August 2019

 

Production Improvements at Granville Tin Mine

 

Highlights:

 

  • Commissioning of the crushing plant at the Granville East Mine completed and processing of crushed material at the Granville Processing Plant has commenced with immediate uplift in tin pre-concentrate production
  • Processing changes delivering improved metallurgical performance

 


 

The Directors of Aus Tin Mining Limited (the Company) are pleased to provide the following operations update in respect of its Granville Tin Mine.

 


 

As announced previously the Company had taken the decision to acquire its own crushing plant and following a four-week refurbishment, the second-hand plant that comprises primarily Jacques crushing and screening equipment, has now been commissioned to produce a crushed product suitable to feed the processing plant (Figure 1). For the remainder of August the Company will optimise the crusher throughput rate using stockpiled Run of Mine ore and will complete some minor rectification work on the crusher.

 


 

 


 

Commissioning of the crusher represents a significant milestone and is the first time since the Granville Expansion that crushed high-grade skarn material has been trucked to the Granville Processing Plant. Processing of crushed material commenced on Thursday 22nd August with an immediate uplift in preconcentrate production (Figure 2) and the impact on tin concentrate production will be monitored and optimised over the coming weeks.

 


 

 


 

Click here to view the full announcement 











OPERATIONS AND DEVELOPMENT UPDATE

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Aus Tin Mining Limited (ASX:ANW) 

ASX Announcement 16 July 2019

 

Operations and Development Update


Highlights:

  • Mining & civil contractor appointed for initial mining at Taronga Stage 1. 
  • Mobile crushing plant purchased for Granville Tin Mine.


The Directors of Aus Tin Mining Limited (the Company) are pleased to provide the following operations and development update in respect of its Taronga and Granville tin projects.


Taronga Stage 1 Project 

The Company has appointed Townes Contracting to undertake an initial program of mining, crushing and civil works associated the Taronga Stage 1 Project.  The contract, anticipated to take three months, provides for site establishment, initial mining of approximately 50,000 tonnes of ore and waste (refer Figure 1), crushing of ore and the construction of an 8ML water dam.  Townes Contracting are based in Tenterfield (NSW) and have significant experience with quarrying and crushing operations, and with the construction of tailings dams for mining projects.  Townes Contracting own all the equipment proposed to be utilised for the contract.   

The initial program of work will provide several important outcomes including a provisional metal reconciliation, with the average grade of ore mined to be compared with the respective mining blocks estimated in the 2014 Probable Ore Reserve1 .  The initial program of work will also provide contractor productivity and cost data that may be used to optimise pricing for the remainder of the Stage 1 Project, and material for additional metallurgical test work planned prior to the commencement of Stage 1 pilot plant operations.  Significantly, the initial program of work of mining and crushing only will reduce water demand at a time when northern NSW is experiencing severe drought conditions.   


The remainder of the Stage 1 Project, including the expanded mine and pilot plant operations are targeted to commence late 2019, and it is intended the Stage 1 Project will provide the opportunity to evaluate potential upside on feed grade and tin recovery.  However, the results of the above‐mentioned provisional metal reconciliation and metallurgical test work may provide early results that could be used to accelerate elements of the next stage feasibility work.


As the initial plan of works will substantially reduce the footprint of disturbance, the Company has sought a reduction in the amount of environmental bonding to be lodged with the Department of Planning & Environment, and it is anticipated a decision on the application will be made within 30 days.


Figure 1: Long section of initial 50,000 tonne pit at Taronga Stage 1 (red blocks are ore / dark‐blue blocks are waste)   


Granville Tin Mine 

Notwithstanding a crushing trial was successfully completed with a preferred contractor in May, the Company was unable to secure their servicesin a timeframe consistent with operational requirements, and hence the Company has taken the decision to acquire its own crushing plant.  An initial payment has been made on a second‐hand mobile crushing plant located in Tasmania, and refurbishment of the unit has commenced.    The refurbishment is expected to take three to four weeks, after which the unit will be relocated to the mine.  The key benefits of owner crushing will be a lower operating cost and ability to crush ore on an on‐going basis rather than the campaign basis required for contractors.    In the interim, the Company has continued to processsorted skarn material from the Granville East Mine, stockpiled scats and hanging wall shale.  During the June quarter a total of 461 tonnes of material was processed to produce six tonnes of pre‐concentrate that is being dressed to final concentrate specifications.


As the operation at Granville will no longer be reliant on any contracted works, the Company took the opportunity to undertake a strategic review of the operation, resulting in a decision to focus on higher mine grade and increased plant recovery, albeit it at a lower plant throughput (which won’t be fully assessed until the refurbished crusher is operational).  Revised forecast production and cost data will be released once the new production KPIs are fully implemented. In relation to the changes, Chief Executive Officer, Peter Williams said “now that we are no longer constrained in any way by contractors at Granville we have decided to take a different approach to the operation and believe this will provide the optimal means to exploit this small but high grade tin deposit.  The delays in getting to this point are regrettable but we are looking forward, and anticipate Granville becoming a key contributor to the Company’s success.”


Click here to view the full announcement 

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