Thermites are a double-edged sword. Packing a tremendous energy density, and eager to produce tremendous heat when ignited, thermite is great for welding train tracks. But sometimes you might be ...

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A burst of light, a puff of smoke, and a wave of heat sent nearly 700 grams of thermite up in flames and burning through two clay pots before settling on a hunk of cast iron. "Well ... that just means ...