Radon in surface water
Note the high radon values near the orebody and low values elsewhere.
- The radon anomaly was confirmed in 3 different summers by 3 different operators,
all before the orebody was discovered by drilling.
- First (1969), Bondar-Clegg carried out a water survey at a
spacing of one sample per square mile. This survey included only one sample
near the orebody and it ran 19 pCi/L in radon, which they identified as "probably
anomalous". This sample was not anomalous in uranium.
- Later (1972), in a more detailed survey, I collected water samples by canoe from shallow water around the edge and analysed them
for radon in a tent.
My results are shown in the figure.
- Several years later the orebody was discovered by the drill (shown in solid black on the figure)
All the lakes in the region should be sampled like this, and in favourable areas
bottom samples should be tested as well.
We measure: radon - radium - thoron - radon daughters - alpha radiation.
is recognized as the most sensitive and reliable method for these elements.
Our instruments are used around the world in exploration for uranium, oil & gas, groundwater and hydrothermal,
and in environmental protection, health physics, earthquake prediction, and evaluation of hydrocarbon and NAPL contamination.
In the radon business since 1968, our latest major instrument update was 2015.
Modern, low-power, field-rugged electronics. Some earlier versions still working after 35 years.
Continuous real-time monitoring and data recording.
Winter and summer, from the Sahara Desert to the Canadian Shield, our instruments have faced up to severe field conditions.
- Intrinsically safe functions.
Sensitive to geochemical trace levels necessary for radon in lake water and for radon-thoron isotope ratios.
Can work in a tent without electricity or be carried from point to point in the field.
50 readings per day. Results available immediately.
Rechargeable battery pack good for a long day in the field and recharges in a few hours.
Can be operated by junior personnel if carefully supervised.
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.
- EPA compliant.
Click here for more details of instruments.
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accessories we provide
Technical specification sheets and pictures of our instruments provided on request.
Multilingual consulting and training (if required).
For instruments contact|
R.H. Morse & Associates Ltd.
Robert H. Morse, Ph.D., P.Eng.
January 23, 2010
If the water in Midwest Lake had been a few feet higher,
the radioactive boulder train would have been submerged, but the orebody
could have been found with a radon survey.|
We have similar results from
For drill-target location we can run a grid and collect lake bottom waters and
sediments, either from a boat, or by drilling through the ice.