부산대학교 도서관

Focuses on a new discovery of underground coal gasification. Information that coal can be burned underground and the gas thus produced can be used to operate turbines or converted into many vital by-products; View that this new method, when fully developed, can not only mean a tremendous saving of natural deposits now left underground but can also furnish added employment under safer and healthier working conditions; Claim that chemical nature of coal and its gases forms the basis of the method; Discussion on the probabilities of converting the United States mines to underground gasification.