article_snippet.sent: In the German case, the burglars spent almost a year building the burglars tunnel before drilling through the bank’s 3ft-thick concrete walls.
article_snippet.sent: In London, the robbers used heavy-duty drills to bore holes into a reinforced 7ft-thick wall.
article_snippet.sent: Burglars used heavy duty drill to bore holes into a reinforced, two-metre-thick wall so Burglars could gain access to boxes.
article_snippet.sent: Burglars also used drill to break through 3ft of concrete walls to break into the bank's strong room.