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. largest in California, and the largest west of the Rocky Mountains. In 1980, Granite Rock submitted to the Forest Service a five-year plan to remove substantial amounts of limestone from a quarry on the south face of Pico Blanco within the National Forest boundary. The Forest Service prepared an Environmental Assessment of the plan and recommended some modifications, which Granite Rock implemented. When Graniterock obtained the permit in 1983, it began to excavate a open pit mine. The California Coastal Commission required Granite Rock to apply for a coastal development permit for any mining undertaken after the date of notification.