[ad_1] Drum traps were once commonly used in plumbing systems to prevent large objects from entering the drain and to prevent gas from entering the home. They resemble a smaller version of a steel drum and have a sizable access plug at the top. Although P-traps have largely replaced drum traps, they can still be […]
[ad_1] Tank traps are fortifications used to prevent tanks and other vehicles from accessing certain areas. They are made of concrete pyramids and often have barbed wire and other deterrents. While not effective against tanks, they can prevent medium vehicles from passing through. Some traps are called “dragon’s teeth” and Switzerland has a line of […]
