Radon surveys are effective for uranium exploration in the winter.

SOIL COVERED BY SNOW
  • Use the same portable radon detector as for radon in soil gas.
  • Use the same formula to resolve thoron and recognize false anomalies due to soil permeability.
  • Radon does not migrate through solid, impermeable rock; therefore, it is no surprise to find no radon in the snow overlying bare radioactive outcrops.
  • On the other hand, weakly anomalous soils can be readily detected by radon in the overlying snow. See www.finderschoice.com/radon/faraday.php
  • 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.
  • The discovery hole at McClean Lake North was located at a strong radon-in-snow anomaly. Click here for McClean Lake details.
FROZEN LAKES
  • Radon measured in lake water collected by drilling through the ice played a key roll in the discovery of the Patterson Lake South deposit. Click here for details.
  • 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.
  • Detailed surveys are carried out on a grid pattern. For reconnaissance, one or a few samples are collected from each lake.
  • Samples are analysed for radon and radium using the same equipment as above. For immediate results our instrument can be set up in a tent, or pulled from point to point in an ice fishing hut. Or the samples can be sent back to a central location. For radon the samples must be analysed within a week. Samples can also be analysed for uranium and other elements.
  • For details of other lake surveys, click Kiggavik or Midwest Lake.
ARCHIVED SAMPLES
  • Samples of soil, sediment, crushed rock, water or vegetation archived from earlier surveys can also be analysed for radium.
  • We can use pulps or coarser fractions. Sometimes as little as a gram or two will suffice.



INSTRUMENTS
  • We measure: radon - radium - thoron - radon daughters - alpha radiation.
  • The Lucas cell 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.
  • Click here for or other instruments, components and 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.
1-416-269-9979
morse@finderschoice.com
skype: robert.morse.toronto


Robert H. Morse, Ph.D., P.Eng.
Click here for other applications of our radon instruments.

Copyright 1968 - 2018, R. H. Morse & Associates Ltd., All Rights Reserved