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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]
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).
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 .
As the race in space was winding down, soviet scientists turned inwards. You'd never guess that this is the site of one of their great achievements. This hard-to-find rusty cap in the ruins of a ...
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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 ...
The Garfield County Frontier Fairgrounds, near Burwell, Nebraska, also known as Burwell Rodeo Ground, is a historic property with significance dating to 1922.A 40-acre (16 ha) area was listed as a historic district on the U.S. National Register of Historic Places in 1985.
The Sandhills Global Event Center, known as the Lancaster Event Center until December 2023, is a public nonprofit fairgrounds-style event complex located in Lincoln, Nebraska owned and operated by the Lancaster County Agricultural Society. It was originally built to provide a permanent home for the Lancaster County Fair and other community events.