That equates to nine million tonnes of avoidable excess fuel and more than 28 million tonnes of CO2.
Engineers tweaked the machinery to add another 220, 000 tonnes to the mill's 740, 000-tonne annual output.
The index stood at 2.39 tonnes of CO2 per tonne of oil in 1990.
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It is thought another 400 to 500 tonnes of material still has to burn.
According to Citigroup, iron ore surplus is expected to reach 70 million tonnes by 2015.
That would be sufficient, in optimum circumstances, to recover more than 1, 000 tonnes of oil.
It is proposed that an annual 3, 000 tonnes of REE mixed carbonate be garnered.
For a fusion torch the figures are around 5, 000 tonnes and 1, 000 tonnes respectively.
In December 2011, the bypass was shut by a landslip which involved 100 tonnes of rock.
This will boost the coal terminal's capacity from 72m to 91m tonnes a year by 2009.
This immense canopy will open instantaneously and must absorb an impulse of almost 30 tonnes.
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Work has begun on removing several tonnes of silt from the River Nene in Northamptonshire.
In an average year, the basin absorbs about 1.5 billion tonnes of CO2 from the atmosphere.
The illegal dumps the DoE are starting to uncover are in the region of 5, 000 tonnes.
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In 2008, a further 27, 500 tonnes of construction waste was dumped near Tyddyn Whisgin.
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Since 1990 its soyabean output has risen from barely 15m tonnes to over 60m.
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LZ-N07, a 75-metre semi-rigid design that can carry two tonnes of cargo, or 12 passengers.
Last year it produced 3 million tons (3.48 million tonnes) of cold- and hot-rolled sheet steel.
At current prices, 400m euros' worth of gold amounts to about 10.36 tonnes of metal.
However, 98 tonnes of plastic was sent to Hong Kong last year, it said.
The proposed plant would process 220, 000 tonnes of waste collected in Oxfordshire, Berkshire and London.
He recently hauled his largest ever catch of cod - 30 tonnes in a single net.
In 2011, 250 tonnes of household plastic packaging was collected through the bring banks.
If approved the quarry would release five million tonnes of new sand and gravel reserves.
Vehicles heavier than 7.5 tonnes are being advised to use the A6 via Pride Park.
Another worker says tonnes of old meat were recycled instead of being thrown away.
It harvested a total of nearly 24, 000 tonnes in 2012, 1, 000 tonnes more than 2011.
But it is already producing 36m tonnes, and should reach 52m by the end of 2007.
Its current annual output of 2, 000 tonnes could be increased without too much difficulty.
They also agreed to buy 1.5m tonnes of gas from the project every year.
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