222Rn variations in Mystery Cave, Minnesota.

  title={222Rn variations in Mystery Cave, Minnesota.},
  author={R S Lively and B C Krafthefer},
  journal={Health physics},
  volume={68 4},
222Rn concentrations and meteorological parameters were measured at 4-h intervals over a 2-y period in Mystery Cave, southeastern Minnesota. Continuous radon monitors and meteorological sensors connected to data loggers were installed at several locations along commercial tour routes. 222Rn concentrations ranged as high as 25 kBq m-3 in summer and 20 kBq m… CONTINUE READING