Heavy Drills 2006 3,485 h United States, Charleston, West Virginia
Heavy Drills 2020 558 h United States, Laurel, Delaware
Heavy Drills 2007 15,735 h United States, Lamar, Indiana
Heavy Drills 2018 4,794 h United States, Perris, California
Heavy Drills 5,452 h United States, Charleston, West Virginia
Heavy Drills 2019 105 h United States, Princeton, California
Heavy Drills 2007 8,705 h United States, Saugerties, New York
Heavy Drills 1965 Canada, Lethbridge, Alberta
Heavy Drills 1997 2,358 h Canada, Martensville, Saskatchewan
Heavy Drills 2019 1,400 h China24h
Heavy Drills 2020 1,350 h China24h
Heavy Drills 2019 1,100 h China24h
Heavy Drills 2019 1,300 h China24h
Heavy Drills 2020 1,400 h China24h