Operation LAC

A C-119 Flying Boxcar, the type of plane used to release the chemicals

Operation LAC (Large Area Coverage) was a United States Army Chemical Corps operation which dispersed microscopic zinc cadmium sulfide (ZnCdS) particles over much of the United States and Canada in order to test dispersal patterns and the geographic range of chemical or biological weapons.[1]

  1. ^ National Research Council (US) (1997). Toxicologic Assessment of the Army's Zinc Cadmium Sulfide Dispersion Tests. National Academies Press (US). pp. Appendix A: Zinc Cadmium Sulfide Dispersion Tests. ISBN 9780309174787.