NRCS

Natural Resources Conservation Service

NURE

National Uranium Resource Evaluation

OECD

Organisation for Economic Co-Operation and Development

OR

odds ratio

OSHA

Occupational Safety and Health Administration

P2O5

phosphorus pentoxide

PAl

peraluminous magmas

Pb

lead

pCi/L

picocuries per liter (1 × 10–12 Ci/L)

PEL

permissible exposure limit

PNEC

predicted no-effect concentration

ppm

parts per million

PR

Prognosticated Resources

Ra

radium

RAR

Reasonably Assured Resources

RCRA

Resource Conservation and Recovery Act

REE

rare earth elements

REL

recommended exposure limit

rem

roentgen equivalent in man (1 rem = 0.01 Sievert)

Rn

radon

RR

relative risk

SDWA

Safe Drinking Water Act

SMR

standardized mortality ratio

SR

Speculative Resources

Sv

Sievert

Ta

tantalum

TAG

technical assistance grant

TENORM

technologically enhanced naturally occurring radioactive materials

Th

thorium

ThO2

thorianite (thorium oxide)

Ti

titanium

tU

metric tonnes uranium

U

uranium

USDOE

U.S. Department of Energy

USDOT

U.S. Department of Transportation

USEIA

U.S. Energy Information Administration



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