seam gas content
51Powder River Basin — The Powder River Basin The Powder River Basin is a geologic region in southeast Montana and northeast Wyoming, about 120 miles (190 km) east to west and 200 miles (320 km) north to south, known for its coal deposits. The region supplies …
52permafrost — /perr meuh frawst , frost /, n. (in arctic or subarctic regions) perennially frozen subsoil. Also called pergelisol. [1943; PERMA(NENT) + FROST] * * * Perennially frozen earth, with a temperature below 32 °F (0 °C) continuously for two years or… …
53sapropelic coal — ▪ coal classification hydrogen rich coal, including cannel coal and boghead coal (see torbanite), derived from sapropels (loose deposits of sedimentary rock rich in hydrocarbons) and characterized by a dull black, sometimes waxy lustre.… …
54Technological and industrial history of Canada — The technological and industrial history of Canada encompasses the country s development in the areas of transportation, communication, energy, materials, public works, public services (health care), domestic/consumer and defense technologies.… …
55Aquarium — An aquarium (plural aquariums or aquaria ) is a vivarium consisting of at least one transparent side in which water dwelling plants or animals are kept. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, marine mammals, and aquatic… …
56Ames Research Center — Ames Research Center …
57Graphite — For other uses, see Graphite (disambiguation). Graphite Graphite specimen General Category Native element mineral …
58Tap water — Indoor Tap commonly found in the bathroom or kitchen. This tap is a single handle, double spout tap (one spout for hot water, one spout for cold water). Tap water (running water, city water, municipal water, etc.) is a principal component of… …
59Atherton, Greater Manchester — Coordinates: 53°31′23″N 2°29′42″W / 53.523°N 2.495°W / 53.523; 2.495 …
60Dukinfield — For other uses, see Dukinfield (disambiguation). Coordinates: 53°28′26″N 2°04′58″W / 53.4739°N 2.0828°W / 53.4739; 2.0828 …
