Surface drill rigs 2006 United States, Pittston, Pennsylvania
Surface drill rigs 8,316 h United States, Mount Juliet, Tennessee
Surface drill rigs 1987 United States, Mifflinburg, Pennsylvania
Surface drill rigs 2004 3,945 h United States, Dallas, Texas
Surface drill rigs 4,852 h United States, Mount Juliet, Tennessee
Surface drill rigs 2006 3,200 h United States, Pittston, Pennsylvania