A controlled explosion
is a method for detonating or disabling a suspected explosive device
Methods which are used to set off a controlled explosion include emptying out the area and moving the package (with the aid of robots) into a confined space such as a telephone booth.
Another classic method of controlled explosion is to place the bomb in a skip and fill it with sand before detonating it with a self-incendiary device or a fuse.
Controlled explosions are becoming quite common in the UK, especially in the South East as there is a lot of development there, so unexploded World War II bombs are often found by construction diggers.