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).
Rock of Ages Corporation natural stone producer, announced the acquisition of Swenson Granite and Rock of Ages Corporation to become the largest producer of marble and granite in North America. This also includes the Canadian division of Rock of Ages Corporation, located in Stanstead, Quebec, along the Vermont and Quebec border. ROAC maintains the world's largest "deep hole" granite quarry. The quarry is called the "E. L. Smith Quarry", and the Devonian Barre Granite is mined there. Granite was originally quarried using primitive techniques which implemented hand saws and explosive charges to blast away the "benches" of the quarry. Modern techniques have evolved to