Conway granite near where it is mined. The Old Man of the Mountain, a famous geologic feature in New Hampshire (which collapsed in 2003) was made of Conway granite. The formation is found throughout the lower areas of the central White Mountains, such as Franconia Notch, Crawford Notch, the center of the Pemigewasset Wilderness, and the Saco River valley. Other exposures of the formation include the Belknap Mountains south of Lake Winnipesaukee. Conway granite Conway granite is a typically pink mineral-rich igneous (or mesoperthitic) biotite granite. It is amphibole-free and of coarse particle size (with portions of the rock fine-grained or porphyritic).
California Coastal Comm'n v. Granite Rock Co. The Coastal Commission did not seek to prohibit mining of the unpatented claim, only to regulate mining activity in accordance with the detailed requirements of the California Coastal Act. Granite Rock filed an action in U.S. District Court claiming that the Coastal Commission permit requirement was preempted by Forest Service regulations, by the Mining Act of 1872, and by the Coastal Zone Management Act. The District Court denied Granite Rock's motion for summary judgment, and dismissed the action. The Court of Appeals for the Ninth Circuit reversed the lower court's decision, holding that the Coastal Commission permit requirement was preempted