They were abandoned in 1975 in favor of underground blasts in which bombs were detonated in shafts bored deep into the coral and rock cores of the atolls.
12.
Scientists believe rock cores from 1, 500 feet ( 500 meters ) below the seabed could unlock the history of the Antarctic's climate and offer clues to global warming.
13.
Much of the East Antarctic craton was formed in the Precambrian period by a series of tectonothermal tectonic deformation have exposed the metamorphic rock core of these ancient mountains.
14.
Tim Higham, New Zealand's Antarctica spokesman, said on Friday that the rock cores are the first evidence of large volcanic eruptions in the area around 25 million years ago.
15.
The researchers used the most meticulous chemical techniques available to make certain that their fossils were uncontaminated by more recent biological molecules that might have migrated into the rock core.
16.
Scientists believe rock cores from 1, 500 feet ( 500 meters ) below the sea bed could unlock the history of the Antarctic's climate and offer clues to global warming.
17.
The testing company, Strathcona Mineral Services, said the thousands of supposedly promising crushed rock core samples gathered by Bre-X had been tampered with by the addition of gold from other sources.
18.
Scientists believe the rock cores from 1, 500 feet ( 500 meters ) below the sea bed could unlock the history of the Antarctic's climate and offer clues to global warming.
19.
Scientists in Antarctica say they have recovered rock core samples from 500 feet ( 150 meters ) below the sea that will reveal climatic conditions dating back 30 to 100 million years.
20.
The scientists believe the rock cores from 1, 500 feet ( 500 meters ) below the sea bed could unlock the history of the Antarctic's climate and offer clues to global warming.
