Introduction

The scientific paper Active Thermitic Material Discovered in Dust from the 9/11 World Trade Center Catastrophe provides, quite simply, proof that explosives were used in the destruction of the Twin Towers. Specifically, the paper positively identifies an advanced engineered pyrotechnic material in each of several samples of dust from the destroyed skyscrapers, in the form of tiny chips having red and gray sides and sharing a very specific three-dimensional structure, chemical composition, and ignition behavior.

The basis and validity of this identification can grasped quickly by anyone with a working knowledge of physics and chemistry. They need only read the paper's one-page conlusion, and perhaps its section describing the provenance of the dust samples.

But what of the reader whose strong suit isn't the hard sciences? Does one have to be an expert to understand the findings and evaluate the many claims thrown up by "debunkers" to dismiss those findings?

Fortunately, the answer is no. The central observations of the paper can be understood by any intelligent person with some effort. In this thumbnail summary of the paper's findings, I focus on three easy-to-remember features of the red-gray chips established by the paper -- features that undeniably show that the chips are a high-tech engineered pyrotechnic material. Because my description includes some technical language, I have provided a glossary for the benefit of the non-technical reader.