flint fire clay

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• Fire clay — is a specific kind of clay used in the manufacture of ceramics, especially fire brick. The fire attribution is given for its refractory characteristics. There are two types of fire clay: flint clay and plastic fire clay.It is resistant to high… …   Wikipedia

• Flint — (or flintstone) is a hard, sedimentary cryptocrystalline form of the mineral quartz, [ [http://webmineral.com/data/Quartz.shtml General Quartz Information] Webmineral.com (page contains java applets depicting 3d molecular structure)] [… …   Wikipedia

• fire — firer, n. /fuyeur/, n., v., fired, firing. n. 1. a state, process, or instance of combustion in which fuel or other material is ignited and combined with oxygen, giving off light, heat, and flame. 2. a burning mass of material, as on a hearth or… …   Universalium

• Fire Beacon Hill — This is a Local Nature Reserve found in East Devon, England. It is registered as Common land known as Harpford Common. Sidmouth Town Council are the current owners, and are responsible for the management of the site=Geology=The site is part of… …   Wikipedia

• Control of fire by early humans — A reconstruction of Homo erectus, the earliest human species that is known to have controlled fire The control of fire by early humans was a turning point in the cultural aspect of human evolution that allowed humans to cook food and obtain… …   Wikipedia

• Seatearth — is a British coal mining term, which is used in the geological literature. As noted by Jackson (1997), a seatearth is the layer of sedimentary rock underlying a coal seam. Seatearths have also been called seat earth , seat rock , or seat stone in …   Wikipedia

• Mining in India — The Darya i Noor diamond from the Iranian Crown Jewels, originally from the mines of Golconda, Andhra Pradesh. Mining in India is an important economic activity which contributes significantly to the economy of India.[1 …   Wikipedia

• Stoneware — a vitreous or semivitreous ceramic ware of fine texture, made primarily from nonrefactory fire clay. [Standard Terminology Of Ceramic Whiteware and Related Products. ASTM Standard C242.] Its maturation temperature ranges from about 1200°C to 1315 …   Wikipedia

• Connah's Quay — Coordinates: 53°13′04″N 3°03′26″W / 53.2179°N 3.0573°W / 53.2179; 3.0573 …   Wikipedia

• Lower Swansea valley — The Lower Swansea valley ( cy. Cwm Tawe Isaf) is the lower half of the valley of the River Tawe in south Wales. It runs from approximately the level of Clydach down to Swansea docks, where it opens into Swansea Bay and the Bristol Channel. This… …   Wikipedia

• Anthropology and Archaeology — ▪ 2009 Introduction Anthropology       Among the key developments in 2008 in the field of physical anthropology was the discovery by a large interdisciplinary team of Spanish and American scientists in northern Spain of a partial mandible (lower… …   Universalium