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  2. How dangerous are sinkholes? What to know amid search for ...

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    The so-called "Golly Hole" in Shelby County suddenly opened in 1972 and measures 325 feet long, 300 feet wide and 120 feet deep. In 2013, a Florida man was killed as he slept when a sinkhole near ...

  3. Hazardous sinkholes are common in parts of Pennsylvania. Here ...

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    From their root causes to countless complications, here’s what you need to know about sinkholes in Pennsylvania. ... 800-290-4726 more ways to reach us. Mail. Sign in.

  4. Alarming video shows 1,050ft sink hole swallowing cars and ...

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    The hole was stable for 15 years, but is growing again

  5. Environmental impact of fracking in the United States

    en.wikipedia.org/wiki/Environmental_impact_of_f...

    Environmental impact of fracking in the United States has been an issue of public concern, and includes the contamination of ground and surface water, methane emissions, [1] air pollution, migration of gases and fracking chemicals and radionuclides to the surface, the potential mishandling of solid waste, drill cuttings, increased seismicity and associated effects on human and ecosystem health.

  6. Sinkhole - Wikipedia

    en.wikipedia.org/wiki/Sinkhole

    The Red Lake sinkhole in Croatia. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet.

  7. Sinkholes take time to develop, most people just don't notice

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    Have you ever experienced a sinkhole? Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ... 800-290-4726 more ways to reach us. Mail. Sign in. Subscriptions;

  8. Cedar Sink - Wikipedia

    en.wikipedia.org/wiki/Cedar_Sink

    Cedar Sink is a vertical-walled large depression or sinkhole in the ground, located in Edmonson County, Kentucky and contained within and managed by Mammoth Cave National Park. The sinkhole measures 300 feet (91.4 m) from the top sandstone plateau to the bottom of the sink and was caused by collapse of the surface soil.

  9. Search for Pa. grandma believed to have fallen in 30-foot ...

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    “The sinkhole appears to have been created during the time Ms. Pollard was walking around. We don’t see a time when it would have been created earlier,” Limani said on Tuesday.