Sonic drilling, utilizing an innovative casing advancement system, all but eliminates slough, providing improved sample integrity even through limestone, dolomite, sand and other unconsolidated material
SAM's measurements provide evidence of a really interesting process in which the rock and unconsolidated material
at the planet's surface have contributed to the xenon and krypton isotopic composition of the atmosphere in a dynamic way," Pamela Conrad, lead author of the report and SAM's deputy principal investigator at NASA's Goddard Space Flight Center in Greenbelt, Maryland, said in the statement.
SAMs measurements provide evidence of a really interesting process in which the rock and unconsolidated material
at the planets surface have contributed to the xenon and krypton isotopic composition of the atmosphere in a dynamic way, said Conrad.
6 was based on historical measurements from largely unconsolidated material
, and as such, under called resource tonnes in the earlier resource estimate.
Waste rock dumps mainly consist of unconsolidated material
, which can lead to challenges in drilling--it's often difficult to know how deep they are or what types of material they contain.
The deposits at El Boludo are of the braided desert fan type, and the surface gravels are mainly loose unconsolidated material
with some caliche layers.
The increased surface flow initiates erosion in the road bed and increases runoff over the edge of the mesa, causing incision into unconsolidated material
found along the escarpment.
In paces where persons work or travel in performing their assigned tasks, loose or unconsolidated material
shall be sloped to the angle of repose or stripped back for at least 10 feet from the top of the pit or quarry wall.
Planum on unconsolidated material
250, m ~(track length)
The mining cost assumptions were based on the costs for mining comparable unconsolidated material
using a stripping ratio of 0.
Rather, they focus explicitly on hazards of "loose unconsolidated material
," particularly "entrapment by the caving or sliding of materials.
Drilling activity during 2010 has also included deploying a Sonic drill rig which drills a 150mm hole in unconsolidated material
and gives an excellent high volume representative sample, ideal for metallurgical and beneficiation test-work.