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Table 1

Summary of main weathering experiments in the two studies.

Element Surfaces Deposition Duration/total rainfall
Caesium, iodine, ruthenium Framed glass, brick, clay roof tile, sandstone, tarmac, wood cladding Wet, dry 1 year (Sep–Sep)/629 mm
PHE study
Americium, cobalt, cadmium, strontium Glass, brick, concrete roof tile, concrete slab Wet 5 months (Nov–Apr)/527 mm

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