Inventor Nat Freeman explains his invention of extracting high-grade fuel from shale
SLATE INFORMATION: PETROL - 2D A GALLON Motorists' dream realised. Miracle method of extracting high-grade fuel from shale is explained by inventor, Mr Nat Freeman.
ENGLAND: London: Intr. shots in Lab.CU. pan. of Block of jars. Various long views semi views and cus. of Mr. Freeman explaining invention. CU. of Mr. Freeman and Mercury controller.
Sound Effects: Mr. Freeman talks about his inventions, and mentions that he can produce high grade motor oil, lamp oil, light and heavy diesel oil from shale.
Science and Technology; Personalities - Inventors; Great Britain
Background: Inventor Nat Freeman explains his invention of extracting high-grade fuel from shale