Excavation, transportation, and disposal of fresh unconsolidated material
enhance dispersal of sediments into the water and changes in seabed surface and turbidity from dredging plumes, ultimately affecting local ecosystems.
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.
Result of line 4 (Figure 4(a)) shows the presence of two lithological units; the upper zone having moderate resistivity values (50-70 Ohm-m) is interpreted to characterize unconsolidated material
comprising of clayey sand and sand gravel admixture.
The previously used SG of 1.6 was based on historical measurements from largely unconsolidated material
, and as such, under called resource tonnes in the earlier resource estimate.
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.
The mining cost assumptions were based on the costs for mining comparable unconsolidated material
using a stripping ratio of 0.1:1, as the ore body starts from the surface and is made up of unconsolidated ironstone gravels and alluvial.