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.
Following the loss of the broadcast facilities atop the World Trade Center, the New York market was left with the overburdened Empire State Building to handle all television and FM broadcast requirements.
In 1988, TSP program was established to prioritize the restoration of telephone service to critical facilities and agencies at times when telecommunications companies are typically overburdened with service requests, such as after a natural disaster.
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.