Without oil rig roughnecks, we wouldn’t have gasoline to fuel our cars or fly our planes. Oil is an essential energy resource in today’s world. But getting oil from the earth is not an easy job. The roughnecks and others who work on oil rigs have to be strong and prepared for a hard, dirty—and sometimes dangerous—job. 32 pages, full-color photographs, paperback, HI-LO (Reading level grade 3). Save $1 per book when ordering 10 or more copies.