Black Light Helps Reduce False Alarms

Issue 2 and Volume 111.

Black Light Helps Reduce False Alarms THE USE OF BLACK LIGHT lamps and invisible fluorescent tracers by fire departments as an aid in the detection and conviction of persons guilty of sounding malicious false alarms was reported in the May 1945 issue of FIRE ENGINEERING. Since that time many other instances have been recorded. One of the latest cases comes from the Ridgewood, N. J., Fire Department. Ridgewood was recently plagued with malicious alarms transmitted from street boxes. Many times the suspects were questioned, only to be released for lack of suitable court evidence. It was apparent to Chief William H. Haldane that not only would he have to find the means of detecting false alarmists, but also a method of proving guilt of suspects. In 1956 Chief Haldane attended the arson seminar at Purdue University. There he saw demonstrated a portable black light lamp used in conjunction with an…

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