potter's clay extraction

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• Potter's field — A potter s field was an American term for a place for the burial of unknown or indigent people. The expression derives from the Bible, referring to a field used for the extraction of potter s clay, which was useless for agriculture but could be… …   Wikipedia

• Copper extraction techniques — This article is about historical production methods. For modern methods, see Flash smelting. The Chino open pit copper mine in New Mexico …   Wikipedia

• Cornwall — For other uses, see Cornwall (disambiguation). Cornwall Kernow Flag Motto of County Council: Onen …   Wikipedia

• technology, history of — Introduction       the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …   Universalium

• Poland in the Early Middle Ages — According to the currently predominant opinion, the Slavic tribes were not indigenous to the lands that were to become Poland [This is the so called allochthonic theory; according to the autochthonic theory the opposite is true] , but their first …   Wikipedia

• Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …   Universalium

• sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

• List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …   Wikipedia

• Poland in Antiquity — Peoples belonging to numerous archeological cultures identified with Celtic, Germanic and Baltic tribes lived in various parts of Poland from about 400 BC. Other groups were no doubt also present, as ethnic composition of archeological cultures… …   Wikipedia

• cañada — /keuhn yah deuh, yad euh/, n. Chiefly Western U.S. 1. a dry riverbed. 2. a small, deep canyon. [1840 50; < Sp, equiv. to cañ(a) CANE + ada n. suffix] * * * Canada Introduction Canada Background: A land of vast distances and rich natural resources …   Universalium

• Canada — /kan euh deuh/, n. a nation in N North America: a member of the Commonwealth of Nations. 29,123,194; 3,690,410 sq. mi. (9,558,160 sq. km). Cap.: Ottawa. * * * Canada Introduction Canada Background: A land of vast distances and rich natural… …   Universalium