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Also, the docents who host the tours all wear dosimeters that measure radioactivity.

One of the earliest examples of using sound to represent data is the dosimeter, or Geiger counter.

Her job is predominantly to repair and service equipment on the site, most notably the dosimeters which track the levels of radiation of those working across Sellafield.

The Russians also stole hundreds of computers, radiation dosimeters, firefighting equipment and irreplaceable software.

Ukraine says the Russian army looted or damaged more than 1,000 computers at the Chernobyl nuclear power station and stole trucks and radiation dosimeters.