Law-ref.org Single Convention on Narcotic Drugs
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ARTICLE 21: LIMITATION OF MANUFACTURE AND IMPORTATION
1. The total of the quantities of each drug manufactured and imported by any country or territory in any one year shall not exceed the sum of the following:
(a) The quantity consumed, within the limit of the relevant estimate, for medical and scientific purposes;
(b) The quantity used, within the limit of the relevant estimate, for the manufacture of other drugs, of preparations in Schedule Ill, and of substances not covered by this Convention;
(c) The quantity exported;
(d) The quantity added to the stock for the purpose of bringing that stock up to the level specified in the relevant estimate; and
(e) The quantity acquired within the limit of the relevant estimate for special purposes.
2. From the sum of the quantities specified in paragraph 1 there shall be deducted any quantity that has been seized and released for licit use, as well as any quantity taken from special stocks for the requirements of the civilian population.
3. If the Board finds that the quantity manufactured and imported in any one year exceeds the sum of the quantities specified in paragraph 1, less any deductions required under paragraph 2 of this article, any excess so established and remaining at the end of the year shall, in the following year, be deducted from the quantity to be manufactured or imported and from the total of the estimates as defined in paragraph 2 of article 19.
4.
(a) If it appears from the statistical returns on imports or exports (article 20) that the quantity exported to any country or territory exceeds the total of the estimates for that country or territory, as defined in paragraph 2 of article 19, with the addition of the amounts shown to have been exported, and after deduction of any excess as established in paragraph 3 of this article, the Board may notify this fact to States which, in the opinion of the Board, should be so informed;
(b) On receipt of such a notification, Parties shall not during the year in question authorize any further exports of the drug concerned to that country or territory, except:
(i) In the event of a supplementary estimate being furnished for that country or territory in respect both of any quantity over-imported and of the additional quantity required, or
(ii) In exceptional cases where the export, in the opinion of the Government of the exporting country, is essential for the treatment of the sick.