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@ionace @WaspWoman This was a lot of fun to do - The OPAL Metals Survey tasked people across England to sample lake and pond sediments that were then analysed @UCLgeography for trace metals and Hg https://t.co/yx8Wyg2bCB
@ionace @WaspWoman This was a lot of fun to do - The OPAL Metals Survey tasked people across England to sample lake and pond sediments that were then analysed @UCLgeography for trace metals and Hg https://t.co/yx8Wyg2bCB