DMS was contacted by a client working for a local quarry. One half of the quarry was live, the other half older half was now redundant. Copper wiring was being stripped out of the older part of the quarry by metal thief’s and a surveillance team was put in to catch the criminals targeting the copper wire. Nothing happened over the course of the surveillance, but an RSI Videofied system put in at the believed point where the criminals were gaining access was triggered three days later and three men were detained by the police as a consequence. The alarm on site was silent and the criminals did not have any idea that within a minute of entering the site, our operators was calling the local police units who were able to respond immediately.