The magnetic field generated by the SkyTEM system is not a risk to humans, animals, or infrastructure. A person or animal standing on the ground would experience magnetism similar to someone standing next to a typical home, and the process is actually safer than watching an LCD or plasma TV, or even blow-drying your hair. The magnetic field exposure for someone riding on an electric train is approximately 100 times stronger than what a person on the ground would experience from HTEM mapping.
The SkyTEM system will be flown at a fast speed of 100-150 miles per hour (160-240 km/h)., but the helicopter will be operated by experienced pilots who are specially trained for the low-level flying while towing equipment required for the geophysical surveys. The company works directly with the FAA to ensure flights are safe and in accordance with U.S. law.