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Judicial Decision (Opinion of the Court)

Pennsylvania Coal Co. v. Mahon

Editorial summary. The Court held that Pennsylvania's Kohler Act, which forbade the mining of anthracite coal in a manner causing the subsidence of surface structures, effected a taking of the coal company's reserved support estate. Justice Holmes wrote that while property may be regulated to a certain extent, if regulation goes too far it will be recognized as a taking — the origin of the regulatory-takings doctrine.

Citation: Pennsylvania Coal Co. v. Mahon, 260 U.S. 393 (1922)Jurisdiction: Supreme Court of the United StatesDecided: 1922-12-11

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Established · MMXXVRead Law. Not Lore.™Vol. I — Folio I