Surface drill rigs 2011 10,300 h United States, Ludlow, Massachusetts
Surface drill rigs 2011 10,305 h United States, Ludlow, Massachusetts
Surface drill rigs 2011 3,800 h United States, Ludlow, Massachusetts
Surface drill rigs 2006 United States, Louisville, Kentucky
Surface drill rigs 2009 United States, Louisville, Kentucky
Surface drill rigs 2007 United States, Auburn, Washington