Constitutional validity of mineral royalty levy upheld, while excessive interest in writ matters was reduced to a lower rate.

Section 9(3) of the Mines and Minerals (Regulation and Development) Act, 1957 was treated as constitutionally valid because Parliament had valid competence over the field of mineral development, and the State field was excluded to that extent. The challenge based on Articles 265, 268, 269 and 270 failed, as royalty on minerals was treated as a tax for constitutional purposes and the Central enactment was held to support the levy. Separately, the writ direction granting interest at 18% per annum was found excessive and unreasonable, so it was modified to 9% per annum.

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Issues: (i) Whether Section 9(3) of the Mines and Minerals (Regulation and Development) Act, 1957, was constitutionally valid in the light of the legislative entries and Articles 265, 268, 269 and 270 of the Constitution of India. (ii) Whether the direction awarding interest at 18% per annum in the writ matters required modification.

Issue (i): Whether Section 9(3) of the Mines and Minerals (Regulation and Development) Act, 1957, was constitutionally valid in the light of the legislative entries and Articles 265, 268, 269 and 270 of the Constitution of India.

Analysis: The challenge to Section 9(3) was considered against the settled line of authority on the constitutional distribution of legislative power in relation to mines and minerals. The controlling principle applied was that once Parliament has enacted a law under its competence declaring mineral development to be under Union control, the State Legislature is excluded to the extent of the field so occupied. The decision also treated royalty on minerals as a tax for constitutional purposes, and held that the Union enactment validly covered the subject matter. The arguments founded on Articles 268, 269 and 270 did not alter the position because the levy under Section 9(3) rested on valid parliamentary competence and did not disclose any constitutional infirmity.

Conclusion: Section 9(3) was upheld as constitutionally valid, and the challenge failed.

Issue (ii): Whether the direction awarding interest at 18% per annum in the writ matters required modification.

Analysis: The direction for interest was examined independently from the constitutional challenge. The rate of 18% per annum was found to be excessive in the circumstances and therefore unreasonable. A lower rate was considered appropriate to meet the ends of justice.

Conclusion: The interest direction was modified and interest was reduced to 9% per annum.

Final Conclusion: The constitutional challenge to the levy failed, but limited relief was granted by reducing the rate of interest in the connected writ matters.

Ratio Decidendi: When Parliament has validly occupied the field relating to regulation and development of mines and minerals, the State's taxing power over mineral rights stands limited to the extent of that parliamentary law, and a levy under the Central enactment cannot be struck down on the ground that it trenches upon the State field.

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