What does NR stand for?

Naturally Radioactive

This definition appears very rarely and is found in the following Acronym Finder categories:

Science, medicine, engineering, etc.

Other Resources:

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Samples in periodicals archive:

INTRODUCTION All rocks and soils are naturally radioactive, containing various proportions of a variety of radioactive elements.

Remote predictive mapping 2. Gamma-ray spectrometry: a tool for ...

Heat is continually produced there, mostly from the decay of naturally radioactive materials such as uranium and potassium.

India: Puga geothermal plant can help in energy crisis

Many rocks and minerals, such as the pitchblende refined by Madame Curie to produce the first samples of radium, are naturally radioactive and emit radiation all the time.

Nuclear power and the energy crisis

It is not naturally radioactive, but as it circulates in pipes, it can pick up traces of radioactive metals.

NUCLEAR NOTEBOOK

The second incident at the same place was identified as the dumping in 1976 of about 10,000 tons of building rubble and soil from the demolition of Thorium Ltd, a company which extracted thorium from minerals and left a waste product containing 'enhanced levels of naturally radioactive material'.

Inquiry call as nuclear dump sites discovered

A University of Pittsburgh researcher tracked cancer rates in American counties with the highest levels of radon, the naturally radioactive gas.

COULD FEARS BE UNFOUNDED ABOUT LOW-LEVEL RADIATION?