Back to Projects

Isaac Plains

Project Overview

Location: Moranbah (7km East)

Nearest Port: Darlymple Bay Coal Terminal

Rail Line: Goonyella Branch

Mines in Region: Grosvenor, Goonyella, Carborough Downs, Coppabella, Millennium,

Coal Type: Coking & Thermal

Mining Method: Open-cut, dragline & truck shovel

Project Details

  • Isaac Plains is an established mining asset, providing Stanmore with near-term cash flows
    • First revenues anticipated by mid 2016
  • Mining and transportation infrastructure in place
    • Includes dragline, coal handling & processing plant, and rail load-out facilities
    • Rail and port access agreements in place, exporting through to Dalrymple Bay Coal Terminal (DBCT)
  • Right scale of operation and risk profile
    • Mining scale of 1.1 Mtpa product coal provides for optimal mine economics to suit dragline and assumed take or pay profile
    • Contract mining provides lower risk for Stanmore in a competitive contracting market
    • Potential for future expansion via Isaac Plains East and underground mining at Isaac Plains
  • High value metallurgical coal products with market acceptance
    • Strong history of coal sales to major steel mills of Asia
  • High value metallurgical coal products with market acceptance
    • Strong history of coal sales to major steel mills of Asia
  • High value metallurgical coal products with market acceptance
    • Strong history of coal sales to major steel mills of Asia


Isaac Plains East

Application Notice  

Mining Lease Application 700016 

Mining Lease Application 700017   

Mining Lease Application 700018  

Mining Lease Application 700019 


The Mine

  • Commenced production in 2006 as a truck shovel operation
  • Dragline operations commenced in 2011/2012 
  • Historically targeted over 2 Mtpa of product coal
  • Placed on care and maintenance late 2014

Coal Handling and Preparation Plant (CHPP)

  • Coal trucked to the CHPP and washed to form a product at a total yield of 70-75%

Transport and Sales

  • Product coal is railed 172km to DBCT via the Gooneyella Rail System
  • Sold primarily to Japanese, Korean and Taiwanese steel makers


  • Well laid out site with mine infrastructure located along western side of lease
  • Short spur connection to Goonyella Brach  Railway
  • Ease of access for potential Isaac Plains East extension via haul road
  • Close to camp accommodation facilities


Product Split

    • Bucyrus BE1370
    • High performance machine. In last year of operation under previous ownership moved >15m bcm
    • Major pre-start service planned including replacement of swing rack

    Train load out

      • CHPP, stockpile and train loadout in close proximity
      • Conveyorfeed to rail surge / loading bin

      Coal Handling & Processing Plant

        • 500tph feed rate (3.5Mtpa) constructed in 2006
        • Belt press filter - no tailings dams
        • Flexible operating setup to produce multiple coal products

        Office facilities and workshops

        • Established office setup includes comms and other infrastructure
        • Several maintenance workshops


        • The Leichhardt seam (Rangal Coal Measures)  averages 3.5m thick across the deposit. The seam splits into an upper and  lower section in the far northern area
        • Depth of cover commences at 60m, dipping to  the east of 6-7 degrees with a maximum depth around 230m in the north east  of the tenement
        • Nine year mining history provides significant information about the deposit
        • Isaac Plains – over 100 cored holes drilled in unmined portion of Mining Lease
        • Isaac Plains East – over 200 holes drilling within tenement area
        • Over 18 km of 2D seismic over combined  tenements


        • Xenith Consulting Pty Ltd updated the  Resource and Reserve estimate for Stanmore in 2017 within the Mining Lease area and the new Isaac Plains East area currently.
        • Significant Resource coverage within Mining Lease
        • Current Reserves support over 8 years of open cut mining at planned mining rate of 1.5Mtpa ROM

        Note 1: Refer Competent Persons Statement

        Note 2: Refer Reserves Note


        •   Historically sold primarily to North Asian steel makers - attractive coal qualities may broaden customer base
        • Plan to continue to produce three products;         
          • Semi-Hard Coking Coal        
            • Moderate ash and volatile matter content
            • Low impurities such as sulphur and alkalis  
          • Semi-Soft Coking Coal                 
            • Attractive volatile matter content, lower than Hunter Valley benchmark        
            • Low total sulphur with high calorific value
          • Thermal
          • High energy content with low sulphur, ash and nitrogen content, excellent handling characteristics, easy to grind.
        • Approximately 70% of historic production was coking coal


        • Approximately 1.1Mtpa of rail and port capacity
        • Further expansion capacity available in  current market environment
        • Total transport infrastructure costs under  A$15/tonne at steady-state production
        • Significant capacity within Isaac Plains  CHPP and train load out up to 2.8Mtpa of production


        • Ability to utilise 100% owned dragline once  Isaac Plains open cut mining is completed
        • Low cost coal – strip ratio starts at under 5:1
        • Significant potential synergies with Isaac Plains - minimal capital required to open up brownfield expansion (2km haul road and other minor infrastructure only)
        • Similar coal quality product expected based on historical results analysis

        Previous Project New Cambria Next Project Belview