Edwards AFB was used to test air-dropped chemical munitions with mustard, nerve, Phosgene, cyanogen chloride, and hydrogen cyanide fills. During 1992, two AN-Ml25 bomblets and one M-78 bomb were uncovered with fuzes still intact. The munitions were incinerated onsite and 30 days of monitoring took place following the disposal. During May 1950, the Technical Service Unit conducted a clearance operation that produced items that were chemical-filled. All explosives were detonated. All chemical munitions were punctured, and the contents were destroyed by burning (area not identified), Further decontamination was done using bleach powder and DANC (a decontaminant). The installation was granted a Certification of Clearance after this operation on June 9, 1950.