Surface drill rigs 2006 United States, Mifflinburg, Pennsylvania7d
Surface drill rigs 2004 United States, Louisville, Kentucky
Surface drill rigs 1999 United States, Louisville, Kentucky
Surface drill rigs 2000 United States, Louisville, Kentucky
Surface drill rigs 2005 United States, Louisville, Kentucky
Surface drill rigs 2003 United States, Louisville, Kentucky
Surface drill rigs 1997 United States, Louisville, Kentucky
Surface drill rigs 2006 United States, Louisville, Kentucky
Surface drill rigs 2015 United States, Louisville, Kentucky