No person shall transport into or through the State, or store, hold or detain pending or during such transit, any of the following materials without first having obtained a certificate of handling from the department:
a. Plutonium isotopes in any quantity and form exceeding two grams or 20 curies, whichever is less;
b. Uranium enriched in the isotope U-235 exceeding 25 atomic per cent of the total uranium content in quantities where the U-235 content exceeds one kilogram;
c. Any of the actinides the activity of which exceeds 20 curies;
d. Spent reactor fuel elements or mixed fission products associated with such spent fuel elements the activity of which exceeds 20 curies;
e. Any quantity of radioactive material which exceeds 20 curies; or
f. Any lesser quantity of radioactive material which, when combined with any other quantity of such material, exceeds 20 curies.