Why wonder when there is wikipedia
Oil shale - Wikipedia, the free encyclopedia
If it cost $20/bbl to extract ; I doubt the energy imput is high.
has announced that its in situ extraction technology in Colorado could become competitive at prices over $30 per barrel ($190/m3), while other technologies at full-scale production assert profitability at oil prices even lower than $20 per barrel ($130/m3). [56][57][58][43] To increase the efficiency of oil shale retorting, several co-pyrolysis processes have been proposed and tested. [59][60][61][62][6
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Sometimes death is not as tragic as not knowing how to live. This man knew how to live--and how to make others glad they were living. - Jack Benny at Nat King Cole's funeral
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