text: The most common area denial weapons are land mines of various types, planted by hand or dispersed by artillery. Some modern prototypes experiment with automatic guns or artillery-delivered ammunitions that are fired only after remote sensing detects enemies.
  Booby traps or improvised explosive devices in sufficient concentration also qualify as area denial weapons, though they are much easier to clear and usually pose less long-term danger. Temporary area denial can be achieved on a tactical level by artillery barrage.
  During an armed conflict there are several methods of countering land mines. These include using armored vehicles to negate the effects of anti-personnel land mines. Land mines can also be cleared either by hand, or by using specialised equipment such as tanks equipped with flails. Explosives can also be used to clear mine fields, either by artillery bombardment, or with specialised charges such as Bangalore torpedoes, the Antipersonnel Obstacle Breaching System and the Python Minefield Breaching System.
  156 states are parties to the Ottawa Treaty under which they have agreed not to use, stockpile, produce or transfer anti-personnel mines.