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Valetta Aircraft Spraying the BW Simulant - Zinc Cadmium Sulphide

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Uploaded by on May 7, 2009

This declassified Porton Down film, which is Crown Copyright, shows a Valetta aircraft making a number of passes in front of the camera - all the time spraying the Biological Warfare simulant - Zinc Cadmium sulphide. These particular experiments were conducted during March 1958, and were conducted to determine the characteristics of an aircraft mounted Zinc Cadmium sulphide dispenser. The resulting information was then used in Porton Down's later public area BW experiments, some of which (the Large Area Coverage or LAC) contaminated vast swathes of the UK. A BW simulant is a supposedly harmless substance which mimics the physical properties of a real BW agent, in this case, size (between 1-5 microns). BW simulants are used in BW experiments in which, for safety reasons, a real BW agent could not be used.

A similar procedure was adopted for the 1963/64 Norwich Trials. An aircraft, this time a Devon, sprayed the BW simulant Zinc Cadmium sulphide, at a rate of 2-3 lbs per mile, as it flew along a 62 nm track across Norfolk - at a distance of 24 miles upwind of the city of Norwich. When the massive aerosol cloud reached its target area, Porton Down scientists conducted clandestine sampling of the air at a large number of locations, across the city and surrounding countryside.

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  • They are still doing it FACT, look up.

  • I remember seeing a Google video that mentioned some of these types of activities. It mentioned that the super powers at the time agreed to ban the use of biological weapons, but ONLY because of test like these had determined delivery systems were unreliable.

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All Comments (8)

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  • I Dropped this title & the the name Porton Down into the Wikipedia search bar.(4fun:)

    They had nothing on the Valetta Aircraft Simulant Spraying, and absolutely no mention of the 1958 Simulant Spraying on the Porton Down page.(feb26th2011)

    I have seen this clip many times before, you would think Wikipedia would have mentioned this WELL documented event?(or a link to the video)?

  • Still at it today!! Look at Our skies people!!!

  • I believe the powers that be have been perfecting the spraying of chemical, biological, nano tech shit and what every else they think will harm us ever since aircraft were invented.

  • Peasant weed control. Great vid

  • Cool footage. Reading right now about 1970s weather spraying!! This is Way before that!  l,p

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