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  2. Chicago River - Wikipedia

    en.wikipedia.org/wiki/Chicago_River

    As part of a more than fifty-year-old Chicago tradition, the Chicago River is dyed green in observance of St. Patrick's Day. [81] The actual event occurs on the Saturday on or before March 17. The tradition of dyeing the river green arose by accident in 1961 when plumbers used fluorescein dye to trace sources of illegal pollution discharges. [82]

  3. Chicago River dyed green for St. Patrick's Day in surprise ...

    www.aol.com/news/chicago-river-dyed-green-st...

    "Although we didn’t gather, we were able to honor long-standing tradition by dyeing the Chicago River green," Mayor Lori Lightfoot tweeted Saturday. Chicago River dyed green for St. Patrick's ...

  4. Chicago kicks off warm St. Patrick’s Day weekend with green ...

    www.aol.com/chicago-kicks-off-st-patrick...

    By 8 a.m. Saturday morning, hundreds of spectators lined up along the river and bridges, waiting for boats to spray the dye through the channel on a windy but seasonably warm March day.

  5. Chicago River dyed green for St. Patrick's Day - AOL

    www.aol.com/news/chicago-river-dyed-green-st...

    In an annual tradition dating back to the 1960's, the Chicago River was dyed a bright green on Saturday to kick off St. Patrick's Day celebrations across the city. Rough Cut (no reporter narration).

  6. Saint Patrick's Day in the United States - Wikipedia

    en.wikipedia.org/wiki/Saint_Patrick's_Day_in_the...

    In 1962, the city also began its famous Chicago St. Patrick's Day tradition of dyeing of the Chicago River green, with thousands of people lining the streets along the river to watch as a boat releases dye into the river. The Chicago Journeymen Plumbers Union Local 130 has historically sponsored the river dyeing and knows the secret to the dye ...

  7. Fluorescein - Wikipedia

    en.wikipedia.org/wiki/Fluorescein

    One of its more recognizable uses was in the Chicago River, where fluorescein was the first substance used to dye the river green on St. Patrick's Day in 1962. In 1966, environmentalists forced a change to a vegetable-based dye to protect local wildlife. [27]

  8. Chicago River glows green as city prepares to celebrate St ...

    www.aol.com/chicago-river-glows-green-city...

    The tradition began in 1962, when members of the Chicago Journeymen Plumbers Local Union dumped 100lb (45kg) of dye into the river. Chicago River glows green as city prepares to celebrate St ...

  9. Wikipedia : Featured picture candidates/Chicago River dyed green

    en.wikipedia.org/.../Chicago_River_dyed_green

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