Magnetised quark nuggets in the atmosphere
  A search for magnetised quark nuggets (MQN) is reported using acoustic
signals from hydrophones placed in the Great Salt Lake (GSL) in the USA. No
events satisfying the expected signature were seen. This observation allows
limits to be set on the flux of MQNs penetrating the atmosphere and depositing
energy in the GSL. The expected signature of the events was derived from
pressure pulses caused by high-explosive cords between the lake surface and
bottom at various locations in the GSL. The limits obtained from this search
are compared with those obtained from previous searches and are compared to
models for the formation of MQNs.
