Mesa J

Location 130 kilometres south west of Karratha.
Operation Open pit operation with site-based processing facilities.
Working arrangements Employees live in nearby Pannawonica and commute on a Fly-In, Fly-Out basis.
Capacity 7 million tonnes per annum.
Products Robe Valley pisolite ore. 
Geology Channel Iron Deposit.
First year of operation 1994
Ownership Mesa J is owned by Robe River Iron Associates of which Rio Tinto has a 53 per cent operating interest.
Assets

Dozers:
• Komatsu WD900
• D10R, D10T

Dump Trucks:
• Komatsu 730E
• Cat 785C, 789C

Excavators:
• Hitachi, EX450, EX1900, EX3500, EX3600

Graders:
• Cat 16H, 24H

Loaders: 
• Komatsu WA500, WA900, WA1200
• Cat 926, 928, 950, 992G, 994

Water Truck:
• Cat 777

Drills:
• DM-M3, Pit Viper

Local government  Shire of Ashburton http://www.ashburton.wa.gov.au/