Lake water and sediments cover the central peak of Clearwater East, but bathymetric surveys of the lake floor and core drilling confirm the presence of a peak in its center.
32.
Generally, a magnetic core drilling machines is used on a ferrous material directly, but it can also be used on no ferrous material like stainless steel with the help of clamping devices.
33.
This is why depths in excess of 500 m for reverse circulation drilling are rarely achieved, because the cost is prohibitive and approaches the threshold at which diamond core drilling is more economic.
34.
The technique, called core drilling, uses a machine to pull cylindrical plugs from two small vertical holes adjacent to an anomaly and then lowering sensitive detection equipment to determine what the features are.
35.
The scientists were dropped off at a place called Kennecott Point by a helicopter mimicking a " drunken dancer, " Ward said, to begin a week of marathon rock-smashing, core drilling and fossil gathering.
36.
In addition to air defense radar tracks, Dye Stations provided thirty years of meteorological observations the 2 ice cap sites ( e . g ., Dye 3 ) were used for ice core drilling.
37.
Apache Warm Spring is located about 1000 meters south of the entrance to the box canyon . when BE Resources, Inc . sought and received a permit to conduct core drilling at the site.
38.
In the following years continuous core drilling has been carried out, and 2009 mineralizations of zinc and lead ( Myssfallet in Sax�f�ltet ) as well gold ( Bastutj�rnen near Boliden ) were found, among others.
39.
Researchers from Uppsala University in Sweden and the California Institute of Technology report in Science that an analysis of core drillings from beneath the ice showed that ocean once lapped where the ice now is.
40.
About 40 percent more snow is falling on the Lambert Glacier than is being drained away, according to Australian researchers who crisscrossed the world's largest glacier to take depth measurements and core drillings last summer.
