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The Dye 3 ice core was part of the GISP initiative. It was the deepest of the 20 ice cores
recovered from the Greenland ice sheet as part of the GISP at 2037 meters. The original
GISP fieldwork began at Dye 3, Greenland in 1971 where a continuous 372 meter deep,
10.2 cm diameter core was recovered. This operation was followed by other drillings at
various geographical locations (see table at the GISP Homepage). In 1979 drilling began at Dye 3. Drilling from surface to bedrock was completed in 1981 and Dye 3 became the longest core recovered from Greenland to that date. Dye 3 was the primary core of the GISP initiative and much research has been conducted on that core.
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