Various shots of oil wells in hilly and flat fields erected where oil seeps (springs that ooze oil and gas instead of water) were discovered. One oil well is in Coalinga, California. Shot of oil scout on horse, surveying hills to find oil seeps. Shot of geologists walking around hilly area. They are using land surveying instruments to study the rocks and contours of the hills/mountains to figure out what lays underground. Narrator describes how many oil wells were erected in this area on recommendations by the geologists, but they were all “dry.” Shots of oil wells with narrator commenting that, years later, with better equipment, they found oil by drilling deeper. Shot of Kettleman Hills, one of the best known oil fields in California. Shots of men pushing dynamite and equipment into deep holes in ground—they are bouncing sound waves off of underground areas. Paper readouts by seismometers (or seismographs) are studied by geologists and geophysicists in a truck to determine what lays for miles beneath earth’s surface. Shot of oil refinery.