The Oil Drum: Australia/New Zealand

Original Story from Monash University Faculty of Engineering: http://www.monash.edu.au/news/newsline/story/1231

A Monash University environmental engineer has warned in a new report that mineral resources are running out, excavation costs are escalating and the environmental costs of mining are devastating.

The world-first report, The Sustainability of Mining in Australia: Key Trends and Their Environmental Implications for the Future, was authored by Monash researcher and lecturer Dr Gavin Mudd in conjunction with the independent Mineral Policy Institute.

Dr Mudd said the statistics were alarming. "On average, 27 tonnes of greenhouse emissions are created to mine a tonne of uranium. That's equivalent to the annual emissions of nine family cars. To mine one kilogram of gold it takes 691,000 litres of water, and it takes 141 kilograms of cyanide to produce a single kilogram of gold.

Easy Come, Easy Go, or: The Incredible Disappearing 140 Tcf of Canadian Gas.

I posted an article "The Future of (Natural) Gas from the Western Canada Sedimentary Basin?" a few months ago, suggesting that the numbers suggested for Western Canadian gas in the NRCan report "Canadian Natural Gas Review of 2004 & Outlook to 2020" were exceedingly optimistic, basing that conclusion on both National Energy Board Scenarios and actual events.  I did not expect that the next NRCan report in the series would reflect this view, but it has since come out, and its contents prompted me to look further back in the series and then to look at how other official and unofficial assessments were changing.

I have written recently about some of the reasons that coal reserves, as currently understood, might not be quite as large, at present, as they are assumed to be. However, while I could continue on that tack for some additional time, it is perhaps time to give a gentle cough and suggest that there is perhaps a little terminologically inexact thinking in some of the discussions on the actual size of reserves, relative to the overall resource and that there is another viewpoint that should be considered in this debate. Particularly this relates to how much is left and how long it will last.

Firstly it should be recognized that a number of studies of coal reserves have put caveats on their numbers along the lines of “under current operating and economic conditions.” And so let me first put back up the table I posted in my last post , relating to the coal reserves of the UK back in 1952.

Note that this is coal that has largely been proved to be in place. However, in the time frame between 1952 and today it has not been mined or gone away, but it has become, at present, uneconomic to mine. And thus under current conditions it is no longer a reserve. And the one thing that those who write here should know better about assuming is the “current conditions.” Jeepers! We have spent over two years here accumulating convincing evidence that current conditions are not sustainable, and yet that argument is accepted, with little discussion, when it is proposed.