How do they get the brilliant sparks of red, white and blue in fireworks displays? NPR's Eric Westervelt talks with Harry Gilliam, founder of Skylighter, a supplier for pyrotechnics in Round Hill, Va.
Ladies and gentlemen, light your fuses. (SOUNDBITE OF FIREWORKS) WESTERVELT: Fire in the hole. Tonight, as you oooh and awe to brilliant reds and whites and blues bursting in air, you might wonder ...
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