“Mines are getting stealthy, smart and lethal
They have become stealthier by minimizing their sonar profiles, smarter in distinguishing targets from decoys and evolved into lethal systems that can fire torpedoes. With advances in materials technology mines can be rendered near invisible to many forms of detection, can have sweep resistance, dummy mines can be laid (barrels of concrete as an example), smaller explosives can cut sweeper chains, and so on.”