Midwest Lake 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, 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, in a more detailed survey, I collected samples by canoe and analysed them in a tent. My results are shown in the figure. All the lakes in the region should be sampled like this, and in favourable areas bottom samples should be tested as well. 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 health physics, earthquake prediction, and evaluation of hydrocarbon and NAPL contamination. In the radon business since 1968, our latest major instrument update was 2011. Modern, low-power, field-rugged electronics. Some earlier versions still working after 35 years. Winter and summer, from the Sahara Desert to the Canadian Shield, our instruments have faced up to severe field conditions. 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. Click here for pictures of instruments. Click here for or other instruments, components and assessories we provide For instruments contact R.H. Morse & Associates Ltd. 1-416-269-9979 morse@finderschoice.com skype: robert.morse.toronto Multilingual consulting and training (if required). Robert H. Morse, Ph.D., P.Eng. January 23, 2009	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.
	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.

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