The goods, the exportation of which is, in the opinion of the Governor-General, harmful to the Commonwealth are the goods the exportation of which is not consented to by the Minister of Trade and Customs: not the exportation of all non-ferrous scrap metal, but only that to which the Minister does not consent. This determination is made by the Governor-General exclusively under s. 112 (1) (b) and is valid, although the Governor-General limits what is harmful by reference to the Minister's consent. This is not an exercise of the power given to the Governor-General by s. 112 (2) to permit exportation subject to conditions or restrictions. The Governor-General purports to exercise that further power later in the amendment to the regulations by adding to item 65, the so-called condition appearing opposite thereto. If this condition were imposed on the exercise of a power to prohibit the exportation of goods absolutely, and not with reference to the harmful nature of such exportation in the opinion of the Governor-General, the validity of the condition could not be questioned (Radio Corporation Pty. Ltd. v. The Commonwealth [1] ). Here, however, the class of goods the exportation of which is sought to be prohibited is itself determined by reference to a condition, that is to say, to the existence of the opinion of the Governor-General that their exportation would be harmful to the Commonwealth. Then the condition opposite item 65 is a condition imposed upon a condition. But this further condition cannot be held to be a proper condition and valid if it is inconsistent with the first condition, as I think it is if it leaves the Department of Supply and Shipping free to grant its covering approval for a reason which conflicts with the opinion of the Governor-General. Now I think that is what it does. To be valid it should have indicated the reason for which the covering approval might be granted, but assuming always that the exportation would otherwise be harmful to the Commonwealth.