Finally, Rehnquist argued it was incorrect for the majority to overlook Pennsylvania's three defined property interests. He disagreed with the majority's view that the 27 million tons of coal that couldn't be mined as a result of the Subsidence Act wasn't a separate property interest. Rehnquist pointed out that Pennsylvania divides property interests into three categories. These categories are "the support estate, the surface estate, and the mineral estate." Each interest is deemed separate from the other and may have separate owners in fee simple. For example, under Pennsylvania law, one person could own the surface estate, a second person could own the support estate, and a third person could own the mineral estate. If one owner purchased a mineral estate to mine and couldn't after the Subsidence Act was passed, then it reduced the value of that estate. Instead of considering the three separate estates in land, Rehnquist believed that the majority only considered a "broader, yet undefined, segment of property." Looking at this broader property interest led the majority to hold that there was no taking of the whole estate (the three separate estates combined). Rehnquist did not agree with the majority's analysis on this issue and would have found a taking.