Processing under electricity duty law excludes manufacture of a new commodity; higher duty not applicable to mineral-based products.

"Processing" in the inclusive definition of "mine" under the Madhya Pradesh Electricity Duty Act was confined to activities such as crushing, treating or transporting that preserve the identity of the mined mineral and make it marketable, and it did not extend to manufacturing a new and distinct commercial commodity. Applying noscitur a sociis, the SC held that ferromanganese alloy and copper concentrate, being commercially different products arising from substantial transformation, fell outside the extended definition of "mine" and were not liable to the higher electricity duty applicable to mines. Any amount already paid was to be adjusted against future demands.

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Issues: (i) Whether the word "processing" in the inclusive definition of "mine" under Explanation (b) to Section 3(1) of the Madhya Pradesh Electricity Duty Act, 1949 extends to manufacturing activity that brings into existence a commercially distinct product; (ii) Whether ferromanganese alloy and copper concentrate remain "minerals" for the purpose of the higher electricity duty applicable to mines.

Analysis: The statutory scheme levies duty at different rates depending on the purpose for which electricity is sold or consumed, and the extended definition of "mine" covers premises or machinery adjacent to a mine only when they are used for crushing, processing, treating or transporting the mineral. The expression "processing" had to be read in context with the associated words "crushing", "treating" and "transporting", and the Court applied noscitur a sociis to reject an expansive meaning that would absorb manufacturing activity. The relevant inquiry was whether the mineral, after being worked upon, retained its identity as the mined mineral or had undergone a substantial transformation into a new commercial commodity. Ferromanganese alloy was held to be a manufactured product produced from manganese ore along with other raw materials, and copper concentrate was treated on the same footing because it emerged as a different and distinct commercial product. Such manufacturing units were outside the scope of the extended definition of "mine".

Conclusion: "Processing" does not include manufacture of a new and distinct commodity, and ferromanganese alloy and copper concentrate do not fall within the extended definition of "mine" for levy of the higher rate of electricity duty.

Final Conclusion: The appeals succeeded, the impugned judgments were set aside, and the higher electricity duty was held inapplicable to the manufacturing activity in question; any amount already paid was directed to be adjusted against future demands.

Ratio Decidendi: For the purpose of the electricity duty provision, "processing" in relation to a mine is confined to activities that preserve the identity of the mined mineral and make it marketable or transportable, and it does not extend to manufacturing that produces a commercially new and distinct commodity.

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