RETHINKING RISK A PILOT MULTI-CRITERIA MAPPING OF A GENETICALLY MODIFIED CROP IN AGRICULTURAL SYSTEMS IN THE UK

A deluge type fire and explosion suppressing system is provided employing improved light sensing means in the nature of a photomultiplier tube having internal amplification properties and improved control and actuating circuitry for the deluge material releasing mechanism which is substantially immune to the effects of electrical transients of either polarity.