overburden

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overburden

Geology the sedimentary rock material that covers coal seams, mineral veins, etc.

overburden

[′ō·vər‚bərd·ən]
(geology)
Rock material overlying a mineral deposit or coal seam. Also known as baring; top.
Material of any nature, consolidated or unconsolidated, that overlies a deposit of useful materials, ores, or coal, especially those deposits that are mined from the surface by open cuts.
Loose soil, sand, or gravel that lies above the bedrock.
(mining engineering)
To charge in a furnace too much ore and flux in proportion to the amount of fuel.

overburden

1. The entire thickness of soil over rock or over a specific bearing stratum.
2. An undesirable top layer covering rock, gravel, or other useful material wanted for construction.
References in periodicals archive ?
There are other areas of concern where services are being woefully overburdened.
That means a greater strain on our overburdened, overly expensive health-care system.
While this has helped companies improve productivity, quickly respond to changing business needs and seize opportunities, it has also placed new demands on IT systems, which can become overburdened from processing high volumes of Web services traffic and resource-intensive malicious attacks.
As with slavery, wealthy companies and wealthy politicians benefit from cheap labor, while working legal residents and citizens pay for it with overcrowded schools, overburdened medical services, excessive taxes, overburdened infrastructure and lost wages.
With the same powerful performance as the dsPIC30F2010, the dsPIC30F2010MMG can create smart nodes, can put the processor closer to sensors, or can offload the overburdened central processors, in a broad range of embedded systems.
But we do wonder whether deciding the elephants' future should be the responsibility of California's costly and overburdened legal system.
Overweight Americans are at increased risk of disability, disease and premature death, putting tremendous pressure on the country's already overburdened healthcare system with direct and indirect costs estimated at least $252 billion.
This will cause a serious disruption to those who need to operate within the already overburdened criminal justice system,'' Cooley said.
Wyman says that, while some regional and national Less-than-Trailerload (LTL) carriers have been overburdened because of the loss of competitors and capacity to business failure, it is primarily truckload carriers that have been forced to turn away business due to lack of personnel or equipment.
In 2000, the Dodgers went 86-76, finished six games out of first place and faced terrible shortages on the field because of an overburdened payroll.
Alan Mills did a good job for us last year but got a little overburdened.
This contract also puts the Army in the forefront of using advanced electro-optics technology to lessen the combat load of overburdened soldiers.