31. In 2012, one pilot shale oil plant and several development projects operated in Queensland and Tasmania. 32. In 1945 Texaco started shale oil refining study. 33. These are reported by the USGS categorised as oil shale and estimated at of shale oil . 34. This process converts kerogen in oil shale into shale oil by pyrolysis, hydrogenation, or thermal dissolution. 35. Also IG Farben became involved in shale oil . 36. The plant operates two Enefit-140 shale oil units. 37. Since 1935, Estonian shale oil has been supplied to the German Kriegsmarine as a ship fuel. 38. Year later Ashland, Cleveland Cliffs Company and Sohio exited the Colony Shale Oil Project near Parachute, Colorado. 39. In July 1941, " Baltische �l GmbH " was founded for the shale oil extraction in Estonia. 40. Examples include the Arthur Gallery ( " Arthurstollen " ) and the shale oil mine in Pertisau.
