Redstone Quarry, in North Conway, operated from 1887 until 1948. The remnants of machinery, derricks, and buildings constitute one of the more interesting industrial archaeological sites in New Hampshire. The most detailed description of the site is at the excellent WhiteMountainHistory.org web site. Some fascinating pre-1948 photographs are posted there.
quarriesandbeyond.org. Notice the stoneman is not wearing eye or head protection. Many of these stone workers died young from silicosis, a terrible disease.
These are digital files from a Panasonic G1 digital camera with 14-45 mm Panasonic Lumix and 9-18mm and 40-150mm Olympus lenses, tripod-mounted. I thank my North Conway friends for showing me these unusual sites.
Update Nov. 2019: I scanned my 2003 medium format film negatives and wrote a new article on Redstone Quarry. Please click the link to go to the new article. I thank all you readers.