gypsum quarrying

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• gypsum karst —    A karst landscape developed on, or perhaps above, gypsum or similar evaporite rock sequences. Dissolution of gypsum by ground water in buried, interstratal, situations is common and the effects of such dissolution may be expressed at the land… …   Lexicon of Cave and Karst Terminology

• building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

• Cement — In the most general sense of the word, a cement is a binder, a substance which sets and hardens independently, and can bind other materials together. The name cement goes back to the Romans who used the term opus caementicium to describe masonry… …   Wikipedia

• cement — cementable, adj. cementer, n. cementless, adj. /si ment /, n. 1. any of various calcined mixtures of clay and limestone, usually mixed with water and sand, gravel, etc., to form concrete, that are used as a building material. 2. any of various… …   Universalium

• Calcium sulfate — Chembox new Name = Calcium sulfate ImageFile = Calcium sulfate hemihydrate.jpg ImageSize = 200px ImageName = Calcium sulfate hemihydrate OtherNames = Plaster of Paris, Drierite Section1 = Chembox Identifiers CASNo = 7778 18 9 RTECS = WS6920000… …   Wikipedia

• Paraguay — Paraguayan, adj., n. /par euh gwuy , gway /; Sp. /pah rddah gwuy /, n. 1. a republic in central South America between Bolivia, Brazil, and Argentina. 5,651,634; 157,047 sq. mi. (406,750 sq. km). Cap.: Asunción. 2. a river in central South America …   Universalium

• Portland cement — is the most common type of cement in general usage in many parts of the world, as it is a basic ingredient of concrete, mortar, stucco and most non specialty grout. It is a fine powder produced by Portland cement clinker (more than 90%), a… …   Wikipedia

• Dimension stone — Large blocks of granite dimension stone being loaded at Teignmouth in 1827. Dimension stone is natural stone or rock that has been selected and fabricated (i.e., trimmed, cut, drilled, ground, or other) to specific sizes or shapes. Color, texture …   Wikipedia

• Mines of Paris — Flooded gallery under Rue de la Voie Verte The Mines of Paris (in French Carrières de Paris quarries of Paris ) comprise a number of abandoned, subterranean mines under Paris, France, connected together by galleries. Three main networks exist;… …   Wikipedia

• Thornborough Henges — The Thornborough Henges is an unusual ancient monument complex that includes the three aligned henges that give the site its name. The complex is located near the village of Thornborough, close to the town of Masham in North Yorkshire, England.… …   Wikipedia

• Stenhouse Bay, South Australia — Infobox Australian Place | type = town name = Stenhouse Bay state = sa caption = lga = District Council of Yorke Peninsula postcode = est = 1920 pop = elevation= maxtemp = mintemp = rainfall = stategov = Goyder fedgov = Grey dist1 = dir1 =… …   Wikipedia