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| Description: Heating Oil Shale Can Generate Recoverable Oil (a) Oil shale contains organic material that hasn’t experienced conditions extreme enough to make it into oil. (b) Underground heaters raise the oil shale temperature to 650–700° F. This converts organic material in the shale to oil that can then be extracted through producer wells. Picture Stats: Views: 762 Filesize: 236.15kB Height: 1080 Width: 1402 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=21645 |