Surface drill rigs United States, Mifflinburg, Pennsylvania
Surface drill rigs 1977 United States, Mifflinburg, Pennsylvania
Surface drill rigs 2008 United States, Mifflinburg, Pennsylvania
Surface drill rigs 2009 United States, Mifflinburg, Pennsylvania
Surface drill rigs 2006 United States, Mifflinburg, Pennsylvania
Surface drill rigs 2013 3,544 h United States, Blue Bell, Pennsylvania
Surface drill rigs 1990 United States, Mifflinburg, Pennsylvania
Surface drill rigs 1980 United States, Mifflinburg, Pennsylvania
Surface drill rigs 1989 United States, Mifflinburg, Pennsylvania
Surface drill rigs 2004 United States, Mifflinburg, Pennsylvania
Surface drill rigs 1999 United States, Mifflinburg, Pennsylvania
Surface drill rigs 1975 United States, Mifflinburg, Pennsylvania
Surface drill rigs 1987 United States, Mifflinburg, Pennsylvania