# Radioactive Substances Act 1960 (repealed 27.8.1993), Schedule THIRD: Specified elements

Extent: E+W+S+N.I.

Element
Microcuries per gramme
Solid
Liquid
Gas or vapour
1. Actinium
1y10-&sup5;
2y10-&sup6;
7y10-¹¹
2. Lead
2y10-&sup5;
1y10-&sup7;
3y10-&sup9;
3. Polonium
1y10-&sup5;
7y10-&sup7;
6y10-&sup9;
4. Protoactinium
1y10-&sup5;
9y10-&sup7;
3y10-¹¹
5. Radium
1y10-&sup5;
1y10-&sup8;
1y10-&sup9;
6. Radon
1y10-&sup6;
7. Thorium
7y10-&sup5;
1y10-&sup6;
6y10-¹&sup0;
8. Uranium
3y10-&sup4; -
2y10-&sup5;
2y10-&sup9;

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Source: https://www.legislation.gov.uk/ukpga/Eliz2/8-9/34/schedule/THIRD (the official version)
Page: https://openlegislation.uk/radioactive-substances-act-1960-repealed-2781993/schedule-THIRD
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.