Radon surveys are effective for uranium exploration in the winter.
SOIL COVERED BY SNOW
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Use the same portable radon detector as for radon in soil gas.
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Use the same formula to resolve thoron and recognize false anomalies due to soil permeability.
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Radon does not migrate through solid, impermeable rock;
therefore, it is no surprise to find no radon in the snow overlying bare radioactive outcrops.
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On the other hand, weakly anomalous soils can be readily detected by radon in the overlying snow.
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This migration of radon from soil into overlying snow is observed even in the case of
deeply frozen clay soils as in Northern Saskatchewan in March.
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The discovery hole at McClean Lake North was located at a strong radon-in-snow anomaly.
Click here for McClean Lake details.
FROZEN LAKES
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Water and/or sediment samples can be collected from frozen lakes by drilling the ice with an
ice auger. Probes can be lowered for bottom samples.
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Detailed surveys are carried along picket-line grids. For reconnaissance, one or a few samples
are collected from each lake.
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Samples are analysed for radon and radium. The lab can be set up in a tent,
with imediate results, or sent back to a central location. Samples can also be analysed for
uranium and other elements.
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For details of summertime lake surveys, click
here and see our web sites for Kiggavik and Midwest Lake.
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INSTRUMENTS
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We measure: radon - radium - thoron - radon daughters - alpha radiation.
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The Lucas cell is recognized as the most sensitive and reliable method for these elements.
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Our instruments are used around the world in exploration for uranium, oil & gas, groundwater and hydrothermal,
and in health physics, earthquake prediction, and evaluation of hydrocarbon and NAPL contamination.
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In the radon business since 1968, our latest major instrument update was 2011.
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Modern, low-power, field-rugged electronics.
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Sensitive to geochemical trace levels necessary for radon in lake water and for radon-thoron isotope ratios.
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Can work in a tent without electricity or be carried from point to point in the field.
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40 readings per day. Results available immediately.
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Can be operated by junior personnel if carefully supervised.
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Same instruments used for radon and radium in soil, sediment,
plant parts, rocks, water, soil gas, air, and snow, and for radon daughters in air.
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Click here for pictures of instruments.
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Click here for or other instruments, components and
assessories we provide
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For instruments contact
R.H. Morse & Associates Ltd.
1-416-269-9979
morse@finderschoice.com
skype: robert.morse.toronto
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Multilingual consulting and training (if required).
Robert H. Morse, Ph.D., P.Eng.
October 18, 2007
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