Barbed wire
Barbed wire, also known as barb wire, less often bob wire or, in the southeastern United States, bobbed wire), is a type of steel fencing wire constructed with sharp edges or points arranged at interv...
Barbed wire - Wikipedia
Superadobe (sandbag and barbed wire) technology
What is Superadobe?   Superadobe (sandbag and barbed wire) technology is a large, long adobe. It is a simple adobe, an instant and flexible line generator. It uses the materials of war for peaceful en...