Discovery Mine and Northland Pyrite Mine, are both mines in which country?
Canada
Northland Pyrite Mine
The Northland Pyrite Mine, also known as James Lake Mine, Rib Lake Mine, Harris Mine or simply Northland Mine, is an abandoned underground mine in Northeastern Ontario, Canada, located on the southwestern shore of James Lake in Best Township of Temagami.
 It was operated by the Northland Mining Company during the early 1900s with the construction of a 91 m shaft and many open-cuts north of the shaft.
 Minerals present at the mine include chalcopyrite, pyrite and pyrrhotite, deposited in Precambrian volcanic rock of the Canadian Shield.
Discovery Mine
The Discovery Mine was a gold mine 81 kilometers northeast (approx bearing of 15 degrees) of Yellowknife, Northwest Territories that operated between 1950 and 1969.
 Gold was discovered here by Alfred Giauque in 1944.
 A complete townsite, on Giauque Lake, was established by the company to house workers and their families.
 The mine produced one million troy ounces (31,000 kg) of gold from one million tons of ore.
 The abandoned townsite, not accessible by road, was demolished in 2005.
P3 Mk2 mine
The P2 Mk2 and P3 Mk2 are Pakistani plastic cased minimum metal anti-tank blast mines.
 The P2 Mk2 has a square case with a central circular ribbed pressure plate, the P3 is circular with a central circular pressure plate.
 Both mines use anti-personnel mines as the fuse, typically the either the P4 Mk1 or P2 Mk2 anti-personnel mines.
 The anti-personnel mine sits in a cavity below the pressure plate, when enough pressure is place on the pressure plate of the mine, it collapses onto the anti-personnel mine triggering it and the main charge which sits below it.
 A yellow canvas carrying strap is normally fitted to the side of the mine.
 The mines have a secondary fuse well on the bottom which can be used with anti-handling devices.
 A GLM-2 electronic booby trap can be fitted to the cavity under the pressure plate.
 The mine is supplied with a steel disc which makes the mine more easily detectable, although this is seldom used.
 Since 1997 only a detectable version of the mine has been produced, and to comply with the Convention on Conventional Weapons amended protocol II, Pakistani stocks of the mine are being retrofitted with steel detection discs.
 The mines are found in Afghanistan, Angola, Eritrea, Ethiopia, Pakistan, Somalia, and Tajikistan. Davis, Massachusetts
Davis, Massachusetts is the abandoned location of the "Davis Pyrite Mine".
 located in the town of Rowe, Massachusetts.
 Once the largest iron pyrite-mine in Massachusetts, Davis grew to be a decent sized mining village at the beginnings of the Second Industrial Revolution (1870–1915).
 But, in 1911, a non-fatal collapse of the mine due to “poor mining practices” ended the nearly 30-year run.
 By 1937, the mining camp had faded, and all that remained were a blacksmith shop and about 150 cellar holes. Løkken Mine
The Løkken Mine is and underground pyrite mine located in the municipality of Meldal in Sør-Trøndelag, Norway.
 The mine was operative from 1654 to 1987, from the mining community Løkken Verk.
 It contained the largest deposits of its kind in Norway.
 Between 1654 and 1845, a total of 11,300 tons of copper was produced from the mine.
 From 1904 the mine was run by the company Orkla Grube-Aktiebolag, and until 1987 a total of 24 million tons of pyrite was produced from the mine.
 In addition to sulphur, the pyrite contained about 2% copper, in addition to zinc and traces of silver and gold.
 The products were originally transported to the sea by horse and sledge during winter time.
 From 1908 the ore was transported by the Thamshavn Line, which was the first electrical railway line in Norway.
 The annual production was about 350,000 tons of ore during its final years. Greenwood Gold Mine
The Greenwood gold mine operated in Prince William County, Virginia, United States, near the town of Independent Hill for a few years before closing in 1885.
 It was one of two known gold mines in Prince William County, the other being the Crawford placer prospect on Neabsco Creek, near I-95, though small amounts of gold were occasionally found at the Cabin Branch Pyrite Mine in nearby Dumfries. Hickory Ridge, Virginia
Hickory Ridge is an extinct unincorporated town in Prince William County, Virginia.
 The town was located on land that is now part of Prince William Forest Park, a National Park Service property located adjacent to Marine Corps Base Quantico.
 The town was established shortly after the opening of the now defunct Cabin Branch Pyrite Mine in 1889 and was home to many of the mine employees. National Mine Map Repository
The National Mine Map Repository (NMMR) is part of the United States Department of the Interior (DOI), Office of Surface Mining Reclamation and Enforcement (OSMRE or OSM).
 The NMMR resides in the Pittsburgh suburb of Green Tree, Pennsylvania, and collects and maintains mine map information and images for the entire country, including data and maps of coal mines in the anthracite coal region of northeastern Pennsylvania.
 The Green Tree facility provides and stores, digitally and in microfilm (aperture cards), over 182,000 maps of abandoned mines.
 This repository contains maps of mine workings from the 1790s to the present day.
 It serves as a point of reference for mine maps and other information for both surface and underground mines throughout the United States.
 It also serves as a location to retrieve mine maps in an emergency.
 The NMMR provides services ranging from retrieving mine related data for economic analysis to assessing the potential risk associated with underground mining.
 Through analysis of mine maps and related information, the repository assists private and public sectors in industrial and commercial development, highway construction, and the preservation of public health, safety, and welfare.
 In addition, they collect, reproduce, and maintain a national inventory of mine maps and supporting documentation for private and public interests. Cabin Branch Pyrite Mine Historic District
Cabin Branch Pyrite Mine Historic District is a national historic district located at Prince William Forest Park, Triangle, Prince William County, Virginia.
 It encompasses 4 contributing sites and 42 contributing structures associated with the Cabin Branch pyrite mine.
 The pyrite mine opened in 1889, and remained in operation until 1919 or 1920.
 The property includes a number of capped mine shafts, and the remains of a commissary building and an old mill; and mine structures, including crusher house, mill, mechanical and support buildings, numerous rail lines. Lousal mine
Lousal mine was a pyrite mine in Portugal.
 The mine was opened in 1900 and closed in 1988.