I was worried about it initially too, but she is more at risk from the chemicals they use as solvents to dissolve the samples for testing than from the mag field. The'y never said anything about even being pregnant and working in that field. One of her friends worked there through both her pregnancies.

I don't think there's ever been any documented health hazards associated with one. The company is very (almost to a fault) safety conscious so i'm pretty sure there's no adverse health impact. These type NMRs have been around, mostly in colleges for 20-30yrs.

Its just a really, really strong mag field.