The minutes of a meeting, held at the MOD Main Building during February 1969, show that the MRE Porton Down had now reached a point where further research could not be continued without a specific Service requirement, or without information from the Services on their operational needs.
The MRE Porton representative informed the meeting that “the US capability of mounting a successful attack in the Northern hemisphere had been clearly demonstrated, and there was increasing discussion in US and northern European military circles of the use of covert CW and BW to put troops under stress.”