Here are some slides from a talk I heard on the topic (warning, PowerPoint) by a CERN magnet scientist: https://indico.bnl.gov/event/609/contributions/15418/at

Here are some slides from a talk I heard on the topic (warning, PowerPoint) by a CERN magnet scientist: https://indico.bnl.gov/event/609/contributions/15418/attachments/13763/16843/Buzio_-_Safety_and_health_impact_of_magnetic_field.pptx https://indico.bnl.gov/event/609/contributions/15418/attachm... There's some great stuff in there! Like calculating a 3% increase in systolic blood pressure due to magnetic drag at 8T. One of the main takeaways is that DC fields are most likely to kill you because of a fast-moving screwdriver that someone left nearby. By contrast, AC fields --- or moving in non-uniform DC fields --- can be more dangerous. Apart from mechanical (flying screwdrivers) or electrical (fires in the bus-bars) hazards, he indicated that the most common hazard occurred when technicians put their head into/near a very high-field magnet: This affects parts of the "inner ear" vestibular system and therefore causes dizziness/vertigo. In short: They could fall over!