Explosive Materials Taggant Act - Prohibits, after three years following the enactment of this Act, (1) any licensee or permittee from manufacturing importing, or otherwise placing or receiving in commerce any explosive, or (2) any person from placing or receiving in commerce any explosive sold as military surplus, unless such substance contains a material which permits identification of the manufacturer and date of manufacture after detonation and a material which permits detection of the substance prior to detonation.