Blowout 04 : An uncontrolled flow of steam, water, gas or rock material at the ground surface either inside the geothermal well or escaping from the well at depth
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}