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What is the researcher wearing in the first photograph? It looks like a lead smock for radiation protection, but those bags have gaps between them so that doesn

What is the researcher wearing in the first photograph? It looks like a lead smock for radiation protection, but those bags have gaps between them so that doesn't seem likely. Sample containers?

grippn 9y ago
It's a ice jacket. Temperatures in those caves can reach up to 58 °C (136 °F).
- scrumper 9y ago
  Thanks! I see he looks a bit sweaty, on second viewing.