Water Well Drilling Rigs 2006 United States, Mifflinburg, Pennsylvania7d
Surface drill rigs 2022 496 h United States, Mertzon, Texas7d
Tunneling and underground mining drills 2011 12,219 h Austria7d
Surface drill rigs 2021 3,700 h France7d
Surface drill rigs 2021 1,750 h Andorra7d