passive mine

passive mine

1. A mine whose anticountermining device has been operated preventing the firing mechanism from being actuated. The mine will usually remain passive for a comparatively short time.
2. A mine which does not emit a signal to detect the presence of a target. See also active mine.
References in periodicals archive ?
Over the past 15 years, Beam has been an instructor for OSMRE, teaching classes of colleagues about issues such as: acid forming materials, passive mine drainage treatment, computer applications for acid mine drainage treatment, and much more.
JN Bentley's work as contractor on the Horden Passive Mine Water Treatment Scheme was commended for sustainability and environmental issues in this category.
I understand that this was one of the first and most comprehensive demonstrations of passive mine water treatment technology in Europe, incorporating aerobic and anaerobic cells, including Reducing and Alkalinity Producing Systems (RAPS).
The tourist nowadays is wanting more attraction than he can get from a passive mine," he notes.