P-29, r. 1 - Regulation respecting food

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6.5.1.12. The authorized operator who puts an end to his operation shall destroy or cause to be destroyed the unused packages or labels, bearing the reproduction of the stamp, which are in his possession or in that of the reproducer of the stamp.
This rule also requires the destruction of every stamp matrix in the possession of the reproducer of the stamp.
R.R.Q., 1981, c. P-29, r. 1, s. 6.5.1.12.