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Radon concentration can differ widely from place to place. In the open air, it ranges from 1 to 100 Bq/m 3, even less (0.1 Bq/m 3) above the ocean. In caves or ventilated mines, or poorly ventilated houses, its concentration climbs to 20–2,000 Bq/m 3. [79] Radon concentration can be much higher in mining contexts.
In other nearby areas of Scotland (to the north of Aberdeen) and in Cornwall/Devon the radon is very much able to leave the rock. Radon is a decay product of radium which in turn is a decay product of uranium. Maps of average radon levels in houses are available, to assist in planning mitigation measures. [8]
Radon is responsible for the majority of public exposure to ionizing radiation. It is often the single largest contributor to an individual's background radiation dose, and is the most variable from location to location. Radon gas from natural sources can accumulate in buildings, especially in confined areas such as attics and basements.
Radon, a byproduct of naturally decaying uranium, is estimated to cause thousands of deaths each year nationwide. Here's how to protect yourself.
Relief map of North Carolina showing Blue Ridge Mountains (west), Piedmont Plateau (center), and the coastal plain (east), with Outer Banks along the Atlantic Ocean. 3D Topographical Map of North Carolina. The geography of North Carolina falls naturally into three divisions — the Appalachian Mountains in the west (including the Blue Ridge and ...
At lower latitudes, near 30° north, a 7.5-minute quadrangle contains an area of about 64 square miles (166 km 2). At 49° north latitude, 49 square miles (127 km 2) are contained within a quadrangle of that size. As a unique non-metric map scale, the 1:24,000 scale naturally requires a separate and specialized romer scale for plotting map ...
This is a list of Superfund sites in North Carolina designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. . The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up hazardous material contaminations
Mitchell County is a county located in the U.S. state of North Carolina.As of the 2020 census, the population was 14,903. [2] Its county seat is Bakersville. [3]The county is home to Spruce Pine, nicknamed the "Mineral City of the World", [4] and Bakersville, "Gateway to Roan Mountain", which includes the world's largest natural rhododendron garden and the longest stretch of grassy bald in the ...