6.5 Tar Sands Flashcards
What are Tar Sands
Very viscous oil that is mixture of clay, sand, water and bitumen
Opencast Mining
Materials are crushed and mixed with water. Bitumen is separated before it can be used
Strip-mining
Tar Sands are pump out
High pressure stream is injected underground to separate bitumen from sand
Where in the World is Tar Sands Being Exploited Most
Canada
Worlds largest reserves (73% of known global stocks) with three major deposits in Alberta
Tar Sands Benefits
Canada’s national gov promotes tar sands for energy security and economic development
Obviously new jobs
Tar Sands Cost
Housing crisis as thousands of workers shipped in
Pollution of Athabasca River (in Alberta), atmospheric toxins and increase incidence of rare cancers and auto-immune disease
2013 8.5% Canada greenhouse gas emission came from tar sands operations, predicted increase 14% by 2030
How are Tar Sands Extracted
Too thick to be pumped from ground, opencast or strip-mined instead