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From Self-sufficiency
- The mining and production of beryllium is dominated by one American company. This comp ...are placed on purity and cleanliness of Be to avoid artifacts in the X-ray images. Thin beryllium foils are used as radiation windows for X-ray detectors, an41 KB (5,890 words) - 20:34, 20 September 2010
- Humans have been mining and using this heavy metal for thousands of years, poisoning themselves in ...l=http://cnx.org/content/m15003/latest/ |author=Fred HL, van Dijk HA|title=Images of Memorable Cases: Case 81|publisher=Connexions|date=|accessdate=August 2590 KB (13,109 words) - 20:36, 20 September 2010
- |parent_agency = [[Office of Surface Mining]] ...nomic analysis to assessing the potential risk associated with underground mining. Through analysis of mine maps and related information, the repository assi11 KB (1,515 words) - 20:37, 20 September 2010
