Groeten uit Alberta, Canada
Alternet, September 17
The United States has its hopes pinned on Canada's "tar sands" for North American security in the oil market. But their "black gold" is an environmental nightmare.
(...)
Most tar sands production takes place in vast open-pit mines, some as large as 150 square kilometers and as deep as 90 meters. Before strip-mining can begin, the boreal forest must be clear-cut, rivers and streams diverted, and wetlands drained. The overburden (the soil, rocks, and clay overlying the tar sands deposit) must be stripped away and stockpiled to reach the bitumen. Four tons of material are moved to produce every barrel of bitumen.
Zie ook: "Shell stopt miljarden in Canadese 'teerzanden'" (Elsevier, 23 oktober 2006)
Latere toevoeging: en m'n blognotities:
Winning teerzandolie: Tarmageddon in Canada
Winning teerzandolie: landschapsdestructie
Ook in situ oliewinning uit teerzanden is dirty business
Pijplijn teerzandolie bedreigt Canadees regenwoud
12000 mensen omsingelen Witte Huis tegen 'Keystone XL'
EU verdoezelt rapport over teerzand
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