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  2. Kola Superdeep Borehole - Wikipedia

    en.wikipedia.org/wiki/Kola_Superdeep_Borehole

    The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]

  3. Bertha Rogers Borehole - Wikipedia

    en.wikipedia.org/wiki/Bertha_Rogers_Borehole

    The Bertha Rogers Borehole is a former natural gas well in Burns Flat, Dill City, Oklahoma, US.Today plugged and abandoned, it was originally drilled by the Lone Star Producing Company as its oil-exploratory hole number 1–27 between October 25, 1972 and April 13, 1974, reaching a then world record terminal depth of 31,441 feet (5.9547 mi; 9,583 m).

  4. List of deepest mines - Wikipedia

    en.wikipedia.org/wiki/List_of_deepest_mines

    This list of deepest mines includes operational and non-operational mines that are at least 2,212 m (7,257 ft), which is the depth of Veryovkina Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.

  5. What's inside the world's deepest hole?

    www.aol.com/news/whats-inside-worlds-deepest...

    One of our most popular items of 2024, AOL readers have purchased thousands of these $10 surge protectors — here's why

  6. China is drilling new 10,000m deep hole into Earth to search ...

    www.aol.com/china-drilling-10-000m-deep...

    China is drilling a new 10,000-metre deep hole into the Earth with the hope of finding a gas reserve in its southern west Sichuan province. This will be China’s second ultra-deep well, following ...

  7. Scientists obtain deepest rock sample from Earth's mantle - AOL

    www.aol.com/news/scientists-obtain-deepest-rock...

    Scientists using an ocean drilling vessel have dug the deepest hole ever in rock from Earth's mantle - penetrating 4,160 feet (1,268 meters) below the Atlantic seabed - and obtained a large sample ...

  8. Well to Hell - Wikipedia

    en.wikipedia.org/wiki/Well_to_hell

    The temperature deep within was 1,000 °C (1,800 °F), heat from a chamber of fire from which screaming could be heard. The Soviet Union had, in fact, drilled a hole more than 12 km (7.5 miles) deep, the Kola Superdeep Borehole , located not in Siberia but on the Kola Peninsula , which shares borders with Norway and Finland .

  9. China is drilling some of the world’s deepest holes in hunt ...

    www.aol.com/news/china-drilling-world-deepest...

    Chinese engineers on Thursday broke ground on a new super deep borehole that will burrow far into the Earth’s crust as the country steps up its search for natural resources hidden tens of ...