# The Radioactive Substances (Substances of Low Activity) Exemption Order 1986, Schedule 1


SPECIFIED ELEMENTS
Column 1
Column 2
(Element)
(Becquerels per gram)
Actinium
0.37
Lead
0.74
Polonium
0.37
Protoactinium
0.37
Radium
0.37
Thorium
2.59
Uranium
11.10

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Source: https://www.legislation.gov.uk/uksi/1986/1002/schedule/1 (the official version)
Page: https://openlegislation.uk/radioactive-substances-substances-of-low-activity-exemption-order-1986/schedule-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.