I'm just reminded of the story from ages back. Deep in the darkest Cornwall there was my old uni's test mine. Well being a mining school they needed a test mine. Being a mine it had an explosive store. Obviously such a store had hefty walls and a hefty steel door, however this was felt not to be enough. So there was a silent alarm linked up to the local cop shop and from there to the armed response unit.
However, this store was in the middle of nowhere so the claimed response time of >5 minutes was rubbish, as various lightning storms proved. (The alarms were very sensitive, obviously given what they protected, and apart from the police the mine manager was also alerted. He timed a run once and it came out at around 15 minutes and he was still waiting for the police to arrive.)
Nothing much to do with topic I know, but it seemed relevant at the time
