A bund consists of: an impervious bund wall or embankment surrounding the facility or tanks. an impervious floor within the bunded area. any joints in the floor or the wall, or between the floor and the wall.
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Turquoise is found in its natural state in places with dry climates around the world. It can be mined in the U.S., Mexico, Iran, Chile, China, and Tibet. While the characteristics of each stone are very similar, different mines produce slight variations of turquoise.