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介绍了明尼苏达州铁燧岩生产税的各种调节因子的适用性,指出最适宜的是IO(铁矿石)指数。由拥有财产价值税向生产税的转变有利于鼓励开发极低品位的铁矿石。
The applicability of the various regulators of the production tax of the Tetralithic Rock in Minnesota was described, and the most suitable is the IO (Iron Ore) Index. The shift from a property value tax to a production tax will encourage the development of extremely low-grade iron ore.