Regulation 5
Fissile material shall comply with such of the provisions of Regulation 4 of these Regulations as may be appropriate and in addition shall not exceed the following mass limits:—
(a)
for a consignment containing only one of the materials specified in column 1 of the Table set out in Schedule 2 to these Regulations, the limit set out in column 2 of the said Table;
(b)
for a consignment containing more than one of the materials specified in column 1 of the Table set out in Schedule 2 to these Regulations, the sum of the fractions obtained by dividing the masses of each of the said materials present by the relevant limit prescribed in column 2 of the said Table shall not exceed 1.