Pipelayer Dozers 2012 2,043 h United States, Pierre, North Dakota
Pipelayer Dozers 2013 2,355 h United States, Gillette, Wyoming
Pipelayer Dozers 2012 3,786 h United States, Casper, Wyoming
Pipelayer Dozers 2013 1,325 h United States, charlotte, North Carolina
Pipelayer Dozers 2000 United States, Houston, Texas
Pipelayer Dozers 2015 1,019 h United States, Minot, North Dakota