February 2009
Payload programme pays off
A move to make our mines more efficient has cut carbon emissions by about 11,440 tonnes – the same as taking about 2000 passenger vehicles off the road.
Hail Creek Mine pre-strip superintendent Glen Scott said the payload optimisation programme is helping operators manage the amount of materials loaded on haul trucks more effectively.
“Each time a haul truck carries a load, whether it’s coal or waste material, we need to make sure the truck is carrying an optimal amount of weight,” Glen said.
“Too little material on the back of the truck reduces our efficiency, and means we aren’t getting the most out of the fuel we use. Carrying too much material can compromise safety.”
Glen said each haul truck at Hail Creek Mine can safely carry between 210 and 225 tonnes of overburden, or waste material, and between 145 and 185 tonnes of coal, depending on its tray type.
Hail Creek Mine general manager operations Andrew Woodley said the programme was an example of how simple changes can have safety, production and environmental benefits.
“Rio Tinto recognises the climate change challenge will require changes in global energy, transport, land management, industrial and community systems and infrastructure,” Andrew said.
“The payload optimisation programme shows that programmes to improve production can also reduce our carbon emissions, helping us become a more sustainable business.”
The programme is in place at Hail Creek Mine, Bengalla, Hunter Valley Operations and Mount Thorley Warkworth. While some sites started the programme independently, the initiative is now overseen by Rio Tinto Technology and Innovation to help ensure its sustainability going forward.
Tonnes of CO2 equivalent saved in 2008
Hail Creek Mine: Programme started August 2008 - 320 tonnes
Bengalla: Programme started January 2008 - 720 tonnes
Hunter Valley Operations: Programme started January 2008 - 7000 tonnes
Mount Thorley Warkworth: Programme started April 2008 - 3400 tonnes
Total of 11,440 tonnes for 2008