Australia

Yandi Mine

Click for more information

Categories

Overview

Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Production Start1992
ShapshotBHP's Western Australia Iron Ore (WAIO) comprises four main joint ventures (JVs): Mount Newman, Yandi, Mount Goldsworthy and Jimblebar.

Yandi continues its end-of-life ramp-down. Yandi is expected to provide supply chain flexibility with a lower level of production to continue for a few years.

BHP signed an agreement with BP Australia for a trial to assess hydrotreated vegetable oil (HVO) performance, suitability and GHG emission reduction capability in mining equipment at our Yandi operations.

Owners

SourceSource
CompanyInterestOwnershipInvestor's Info
Mitsui Iron Ore Corporation Pty Ltd. 7 % Indirect
ITOCHU Minerals & Energy of Australia Pty Ltd. 8 % Indirect
BHP Group Ltd. 85 % Indirect
BHP Billiton Minerals Pty Ltd. (operator) 85 % Indirect
The Yandi iron ore mine is a part of an 85:15 joint venture between BHP, and Mitsui and ITOCHU. BHP 85%, Mitsui Iron Ore Corporation 7%, ITOCHU Minerals and Energy of Australia 8%.

Contractors

Lock

- subscription is required.

Deposit type

  • Channel Iron (CID)

Summary:

The Yandi region covers an area of approximately 70km E-W and 30km N-S and includes the Yandi deposit (CID), which is in production, as well as the Marillana (BKM) and Ministers North (BKM) deposits, which are at exploration stage.

The main topographic feature of the area is a broad open plateau, dominated by BIFs, shales and dolerites of the uppermost BKM IF and overlying Weeli Wolli Formation, which terminates in a steep NW-SE-trending scarp. To the northeast of the scarp lies the Fortescue Valley, filled with Mesozoic to Cenozoic detrital rocks. Cenozoic rocks also occur on the main plateau, within a major palaeochannel system.

The Yandi mineralisation is of the CID type and occurs within a 27km stretch of the Cenozoic Marillana Formation. This formation infills the meandering palaeochannels of Marillana Creek and its tributary creeks). The total length of the Marillana Creek palaeochannel is at least 80km and the Munjina and Upper Marillana deposits are located at the upstream end of the palaeochannel, to the west of Yandi.

The palaeochannel was eroded in the core of the broad, NNW-trending Yandicoogina syncline, which plunges shallowly to the east. The palaeochannel is flanked by shales, dolerites and BIFs of the Weeli Wolli Formation. The channels incised into the basement lithologies are some 450 to 750m wide and up to 100m deep. The overall gradient is around 2 m/km. At Yandi, the deposits outcrop as a series of low mesas beside the present-day creek.

The mineralisation at Yandi is of the CID type and extends continuously for the entire length of that portion of the palaeochannel covered by WAIO tenements (approximately 35km). The mineralised width of the channel ranges from 300 to 800m and the depth ranges from 70 to 100m.

Mineralisation comprises goethite-hematite pelletoids in the upper part of the Marillana Formation (Barimunya and Iowa Members), with peloid contents increasing towards the base and margins of the channel in the Western deposits at Yandi. The base of the palaeochannel is lined with conglomerates and clays of the basal Munjina Member. Alluvial material, associated with the course of the present day Marillana Creek, flanks the mesa.

Reserves

Lock

- subscription is required.

Mining Methods

  • Truck & Shovel / Loader

Summary:

Yandi is an open-cut mine.

Mining continues through conventional open cut mining methods, including drilling, blasting, and categorisation of blasted material into iron ore or waste rock.

WAIO open-cut mining uses face shovels, front-end loaders or backhoe excavators. The full bench is drilled and blasted for a 12 m height, sampled three times in 4 m increments and three 4 m flitches are then mined.

Ore and Waste haulage is done with both manually operated and autonomous haul trucks. Waste is hauled directly to the adjacent waste storage areas either ex-pit (on surface) or inpit. Waste material is also utilised as fill material for development works and rehabilitating the completed waste dumps.

Ore is hauled to the Run-of-Mine (ROM) pad where it is stockpiled and blended for ore quality before feeding to the crushers using loaders. Some of the ore suitable for blending is also hauled directly to the crushers.

Comminution

Crushers and Mills

Lock

- subscription is required.

Processing

  • Crush & Screen plant

Summary:

Yandi processing hub started operations in 1992 to process ore exclusively from the Channel Iron Deposits (CID) and produce a fines only ore type. The production rate of this hub also has increased over time and it had four primary crushers and three OHPs with a combined nominal capacity of 80 Mtpa. It also recovers 100% mass of plant feed.

This processing hub has a stockyard blending facility and two train load outs.

The mine is reaching the end of its life. Therefore, production ramp down, along with the closure and decommissioning of associated infrastructure, started in July 2021 and has continued into June 2022. Once Yandi mine is fully exhausted, parts of the Yandi processing facilities are likely to be used to process ROM feed from nearby BKM deposits.

Processing plants and other available facilities: 2 primary crushers, 1 ore handling plant, stockyard blending facility and 1 train load out (nominal capacity 50 Mtpa). Decommissioning of additional facilities, including 2 ore handling plants, 2 primary crushers and 1 train load out, is ongoing as part of planned ramp down activities.

Production

CommodityUnits2023202220212020201920182017
Iron Ore kwmt 000000000000000000000000075,35076,888
All production numbers are expressed as lump & fines.

Operational metrics

Metrics202320222021202020192018
Annual production capacity 50 Mt of iron ore lump & fines80 Mt of iron ore lump & fines80 Mt of iron ore lump & fines80 Mt of iron ore lump & fines80 Mt of iron ore lump & fines80 Mt of iron ore lump & fines

Production Costs

Commodity production costs have not been reported.

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Source Source
Job TitleNamePhoneProfileRef. Date
Fixed Plant Maintenance Manager David Hodge LinkedIn Oct 9, 2023
General Manager Ioannis (Yanni) Kotsos LinkedIn Oct 9, 2023
Health, Safety & Environment Superintendent Dmitry Ivanov 0412 429 912 LinkedIn Oct 9, 2023
Mine Manager Stacey Hannam LinkedIn Oct 9, 2023

Aerial view:

Lock

- subscription is required.