Roosevelt Standard | 1920-08-11 | Page 7 | Electricity to Locate Metal

electricity to locate metal meta I 1 the idea of using current I 1 transmitted ra ns through the earth as a means meals or of locating metal ores is familiar the hellit being that the greater of these regions can be clearly indicated and the area mapped out says tho the scientific amer american the location of oil deposits which according to the he electrical review Is now being investigated electrically trl tri colly cally presents present a converse problem in this case the insulating properties of the oil olli diminish ninish the hie current all and oil hearing bearing i regions are detected accordingly in view of 0 the great depth to which it Is often necessary to bore for oil oil oft that only exists exist neou sly nith an alm almost of oil free area above the method would seem to have limitations but it has doubtless possibilities in ill dealing with surface oil areas area a