Chemical accidents rise as Trump administration proposes weakening safety rules

Physicist Ronald Koopman appeared at a Southern California Air District meeting in 2018 to talk about what seemed like an arcane scientific topic: hydrofluoric acid dispersion and water mitigation testing.

First covered Jun 30, 2026 · 5:04 PM PT · 1 article · no longer in the live window

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Appeared in: 2026-07-01 (#14)

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