Company officials said that with open-cast mining accounting for more than 90% of the miner's total production, overburden
removal had to keep pace with rising production and this would require faster deployment of higher capacity mining equipment if the 660-million production target can be achieved.
This innovative fresh air intake system for overburden
drills supplies clean air into the operator's cab simply, reliably and effectively.
The primary technical challenge was to develop an overburden
system that was easily removable to access the waterproofing membrane.
"The recent Analysis of Retreat Mining Pillar Stability LaModel program--or ARMPS-LAM--which was developed at WVU, was an initial step toward incorporating mechanistic overburden
behavior into pillar design," said Tulu.
In the theoretical aspect, the mechanisms of rock burst failures in the overburden
during underground mining remain unclear, and a consistent understanding is yet to be achieved on the overburden
's deformation and failure processes, or its stress distribution patterns.
Under the shallow coal mining, the instability of the overburden
caving zone often brings about a sharp increase in support resistance and which is an important threat to the safety mining.
The objective of this investigation was thus to study the effect of plantation on mine spoil biological properties and carbon pools in four chronosequences of coal overburden
sites in a dry tropical area.
In these systems of development the equality of speeds of movement of an overburden
and mining stope has to be observed.
Let the overlying water be 20, 30, or 35 m thick and let the tunnel overburden
be 25, 35, or 45 m thick.
Although I like Arabic as a language, I don't want to overburden
her if it is optional," the parents of a grade 11 pupil at The Model School Abu Dhabi said.
In clay mining, the overburden
(the layer above the clay seam) and any possible water source nearby can contain organic material which, when decomposed, can produce soluble salts.
The equipment is for the expansion of Adaro's mine in the district of Tanjung and will reduce the average hauling distance of the overburden
trucking operations, and dependency on oil.