A four-month study involving 2000 man-hours of library research, computation, laboratory study and field testing, was set up to prove the feasibility or nonfeasibility of the concept: the marking and detection of individuals with air disseminated encapsulated reagents which remained inactive until released by the activity of the insurgents themselves. The program was divided into several task areas concerning the manufacture and characteristics of the capsules, the environmental and micrometeorological ...