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Land w overhead High power lines
This response maybe too late to help you on making your decision, but maybe it will help some else at a later time.
First I would check with the engineering department of the utility company which crosses the property. Determine the width of easement(if they have one) and the type and voltage of the power line. If the line is only a distribution line which is normally < 25KV ( could be as high as 35KV) nothing to worry about. If its a transmission line and no larger than 69KV, here again, I wouldn't be concerned.
The larger the voltage line the larger the easement and the larger the supporting structures. I would not want to see a large transmission line from my house.
As to EMF, electromagnetic fields, the jury is still out. There have been a lot of studies, but none with conclusive evidence that EMF causes cancer. There was a study done in Switzerland involving sewing machine operators and the study showed a slight increase in the possibility of leukemia. This is low voltage 120/240 single phase and the operators use their machines 8 - 10 hours per day.
EMF is caused by the electric current traveling through the conductor which sets up a magnetic field around the conductor. This field will alternatively build and collapse at the rate of 60 times per second. If the field is strong enough it can induce current into a conductor placed in its field. However, the field strength decreases rapidly with distance.
Hopes this helps, Dave
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Land w overhead High power lines
A correction to my previous post. The EMF study involving seamstresses, tailors, and dress makers was a Finnish study and showed an increase in risk for cancer. A Swedish study did indicate a slight increase in risk for leukemia in children.
A good publication on EMF is "EMF in the Workplace" and can be acquired by calling 800-363-2383. This is a September 1996 publication. Another good publication is "Electric and Magnetic Fields from 60 Hertz Electric Power: What do we know about possible health risks?". This is published by Carnegie Mellon University in Pittsburgh, Pa.
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