Fireworks produce smoke and dust that may contain residues of heavy metals, sulfur-coal compounds and some low concentration toxic chemicals. These by-products of fireworks combustion will vary depending on the mix of ingredients of a particular firework.[from Wikipedia website]

Fireworks take many forms to produce the four primary effects: noise, light, smoke, as well as floating materials (confetti most notably). They may be designed to burn with colored flames and sparks including red, orange, yellow, green, blue, purple and silver. Displays are common throughout the world and are the focal point of many cultural and religious celebrations.[from wikipedia]

Modern colored fireworks were invented in Europe in the 1830s.[1] Modern skyrocket fireworks have been made since the early twentieth century.[from wikipedia]

Fireworks take many forms to produce the four primary effects: noise, light, smoke, and floating materials (confetti for example). They may be designed to burn with colored flames and sparks including red, orange, yellow, green, blue, purple, and silver. [from wikipedia]

A neighborhood in the Santa Clara region of Eugene, Oregon partook in street fireworks of a modest size.

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