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  2. Kola Superdeep Borehole - Wikipedia

    en.wikipedia.org/wiki/Kola_Superdeep_Borehole

    The drilling of the fourth hole was stopped in April 1992 at 11,882 metres (38,983 ft) of depth. Drilling of the fifth hole started in April 1994 from 8,278 metres (27,159 ft) of depth of the third hole. Drilling was stopped in August 1994 at 8,578 metres (28,143 ft) of depth due to lack of funds, and the well itself was mothballed. [7] [12]

  3. Well to Hell - Wikipedia

    en.wikipedia.org/wiki/Well_to_hell

    The "Well to Hell", also known as the "Siberian hell sounds", is an urban legend regarding a putative borehole in the Siberian region of Russia, which was purportedly drilled so deep that it broke through into Hell. It was first attested in English as a 1989 broadcast by an American domestic TV broadcaster, the Trinity Broadcasting Network. [1]

  4. Sakhalin-I - Wikipedia

    en.wikipedia.org/wiki/Sakhalin-I

    Since 2013, the project has set five records for drilling wells with the deepest depths in the world. In April 2015, the O-14 production well was drilled, with length of 13.5 kilometers (44,000 ft), in April 2014 the Z-40 well was completed with a length of 13 kilometers (43,000 ft), in April and June 2013 - the Z-43 and Z-42 wells 12.45 ...

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

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

    This hard-to-find rusty cap in the ruins of a building in Russia's Kola Peninsula. As the race in space was winding down, soviet scientists turned inwards. You'd never guess that this is the site ...

  6. How Drilling the World’s Deepest Holes Could Give Us ...

    www.aol.com/drilling-world-deepest-holes-could...

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  7. Mir mine - Wikipedia

    en.wikipedia.org/wiki/Mir_mine

    After underground operations began, the project had a mine life estimate of 27 years, based on a drilling exploration program to a depth of 1,220 m (4,000 ft). Production ceased in 2001, [12] and the Mir mine closed in 2004. [13] [14] The mine was recommissioned in 2009, and is expected to remain operational for 50 more years. [2]

  8. Russia: Hole drilled from inside Int'l Space Station capsule

    www.aol.com/news/russian-law-enforcement...

    MOSCOW (AP) — A Russian cosmonaut who explored a mysterious hole in a capsule docked to the International Space Station said Monday that the opening was drilled from inside the spacecraft and ...

  9. Scientific drilling - Wikipedia

    en.wikipedia.org/wiki/Scientific_drilling

    The Kola Superdeep Borehole on the Kola peninsula of Russia reached 12,262 metres (40,230 ft) and is the deepest penetration of the Earth's solid surface. The German Continental Deep Drilling Program at 9.1 kilometres (5.7 mi) has shown the earth crust to be mostly porous.