Minn. Stat. § 298.24
Subd. 1. Imposed; calculation.
(g) Consistent with the intent of this subdivision to impose a tax based upon the weight of merchantable iron ore concentrate, the commissioner of revenue may indirectly determine the weight of merchantable iron ore concentrate included in fluxed pellets by subtracting the weight of the limestone, dolomite, or olivine derivatives or other basic flux additives included in the pellets from the weight of the pellets. For purposes of this paragraph, "fluxed pellets" are pellets produced in a process in which limestone, dolomite, olivine, or other basic flux additives are combined with merchantable iron ore concentrate. No subtraction from the weight of the pellets shall be allowed for binders, mineral and chemical additives other than basic flux additives, or moisture.
(h)(1) Notwithstanding any other provision of this subdivision, for the first two years of a plant's commercial production of direct reduced ore from ore mined in this state, no tax is imposed under this section. For the third year of a plant's commercial production of direct reduced ore, the rate to be applied to direct reduced ore is 25 percent of the rate otherwise determined under this subdivision. For the fourth commercial production year, the rate is 50 percent of the rate otherwise determined under this subdivision; for the fifth commercial production year, the rate is 75 percent of the rate otherwise determined under this subdivision; and for all subsequent commercial production years, the full rate is imposed.
Subd. 2. Imposition and calculation of additional tailings tax.
There is hereby imposed upon taconite and iron sulphides, and upon the mining and quarrying thereof, and upon the production of iron ore concentrate therefrom, and upon the tailings so produced an additional tax of 10 cents per 2,000 pounds of tailings produced. For the purposes of this subdivision tailings mean the solid and liquid waste materials resulting from the beneficiation process.
The tax imposed by this subdivision shall only apply to those tailings from a taconite facility which are not deposited on land in accordance with permits issued by the Pollution Control Agency and the Department of Natural Resources.
The proceeds of the tax imposed by this subdivision shall be deposited in the general fund of the state.
Subd. 3.
[Repealed, 2003 c 127 art 11 s 13]
Subd. 4.
[Repealed, 1992 c 511 art 9 s 33]