Alcoa Larego New Mining Area

Alcoa engaged Sedgman Onyx for the definitive feasibility study (DFS), detail design, construction management support and field engineering for both the relocation of the crusher and design of the new non-process infrastructure (NPI) at their Willowbank mine. Alcoa relocated the primary crusher at the mine to a new mining area, which also required establishment of new facilities.  

Details

Location
Wagerup, Western Australia
Contract type
Engineering Design
Status
Completed
Sector
Infrastructure
Expertise
Earthworks
Client
Alcoa

Overview

We were responsible for the following materials handling design: 

  • New 8.4 km overland conveyor including tie-ins 
  • Crusher relocation and new crusher area 
  • High and low voltage electrical infrastructure. 


Sedgman Onyx also completed the NPI facilities design including: 

  • Wastewater treatment 
  • Oily water separation plant 
  • Potable water treatment plant 
  • Heavy and light vehicle wash bay and fuel bay 
  • Workshop, gate house and emergency services building 
  • Production offices and storage facility 
  • Roads and parking 
  • Fire water and service water pumping / distribution 
  • Area lighting, CCTV, security and access control. 

Sedgman Onyx completed the DFS for the crusher relocation within six months, approximately one third of what a project of this size and complexity would historically require. This expedited schedule was achieved through reduced deliverables, a collaborative relationship with the client, and a highly experienced and dedicated team. 

We also successfully completed the crusher relocation and conveyor commissioning within a seven-day shutdown without any clashes or issues.  

The NPI project was also successfully designed and constructed, with Sedgman Onyx field support to support construction and commissioning.