UPDATE ON REGULATORY MATTERS! From updates on studies of mortars to proximate pyrotechnics, this two-volume set has all you need. Get the latest from the NFPA on An Overview of Proposed Requirements for Launching Floating Vessel Fireworks Displays; Learn from CERL with Loads Resulting from the Recoil of Fireworks Mortars and The Challenge of Classifying Fireworks by the UN System; Plus much more! All this covered in two volumes, 592 pages.