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The Periodic Table
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#	Item
681	13th TERRITORIAL SKILLS COMPETITION - SCOPE DOCUMENT 51 - Industrial Mechanic (Millwright) Post-secondary Levels PURPOSE OF THE CHALLENGE DURATION: 6 HOURS Add to Reading List Source URL: skillscanadanwt.org Language: English - Date: 2011-01-31 12:35:31 Construction Millwright Woodworkers Oxygen Welding Acetylene Chemistry Matter Periodic table
682	94 LEAD (Data in thousand metric tons of lead content, unless otherwise noted) Domestic Production and Use: The value of recoverable mined lead in 1996, based on the average U.S. producer price, was $445 million. Seven Add to Reading List Source URL: minerals.er.usgs.gov Language: English - Date: 1997-02-28 13:58:23 Chemical elements Poor metals Post-transition metals Toxicology Lead Gasoline Tin Doe Run Company Matter Chemistry Periodic table
683	150 SELENIUM (Data in metric tons of selenium content, unless otherwise noted) Domestic Production and Use: Primary selenium was recovered from anode slimes generated in the electrolytic refining of copper. Three copper Add to Reading List Source URL: minerals.er.usgs.gov Language: English - Date: 1997-03-06 13:09:47 Periodic table Chalcogens Antioxidants Nonmetals Selenium Tellurium Oxide Bismuth Scrap Chemistry Matter Chemical elements
684	52 COPPER (Data in thousand metric tons of copper content, unless otherwise noted) Domestic Production and Use: Domestic mine production, which had remained unchanged in 1995, resumed the upward trend begun in 1984, ris Add to Reading List Source URL: minerals.er.usgs.gov Language: English - Date: 1999-05-12 12:51:18 Periodic table Dietary minerals Copper Brass Tin Copper mining in Michigan Copper mining in the United States Matter Chemistry Chemical elements
685	Arsenic Fact Sheet Arsenic is a heavy metal. In its pure state, it is a dense, dull grey or yellow material. The metal is used in the manufacture of glass, semiconductors, pigments, and pressure-treated lumber. However, Add to Reading List Source URL: iere.org Language: English - Date: 2013-08-13 12:35:29 Arsenic Toxicology Metalloids Soil contamination Drinking water Heavy metal Neurotoxin Arsenic poisoning Arsenic contamination of groundwater Chemistry Matter Periodic table
686	52 COPPER (Data in thousand metric tons of copper content, unless otherwise noted) Domestic Production and Use: Domestic mine production in 1997 was essentially unchanged at 1.9 million metric tons valued at about $4.6 Add to Reading List Source URL: minerals.er.usgs.gov Language: English - Date: 1999-05-12 12:51:18 Periodic table Copper Brass Tin Copper extraction techniques Copper mining in the United States Chemistry Matter Chemical elements
687	Alternative Model for the Calculation of Uranium Intakes at GSI Prepared by Robert Anigstein S. Cohen & Associates Add to Reading List Source URL: www.cdc.gov Language: English - Date: 2013-03-14 12:28:53 Periodic table Nuclear fuels Actinides Teratogens Uranium Polonium Radioactive decay Matter Chemistry Chemical elements
688	94 LEAD (Data in thousand metric tons of lead content, unless otherwise noted) Domestic Production and Use: The value of recoverable mined lead in 1997, based on the average U.S. producer price, was $440 million. Seven Add to Reading List Source URL: minerals.er.usgs.gov Language: English - Date: 1998-02-20 06:57:25 Post-transition metals Periodic table Zinc Tin Doe Run Company Mineral industry of Africa Chemistry Matter Chemical elements
689	Compendium National Overview - Final[removed] Add to Reading List Source URL: www.ecos.org Language: English - Date: 2012-08-24 14:15:46 Organomercury compounds Periodic table Methylmercury Amalgam Ethylmercury Fish Fluorescent lamp Mercury regulation in the United States Dental amalgam controversy Chemistry Mercury Matter
690	68 GERMANIUM (Data in kilograms of germanium content, unless otherwise noted) Domestic Production and Use: The value of domestic refinery production of germanium, based on the 1996 producer price, was approximately $36 Add to Reading List Source URL: minerals.er.usgs.gov Language: English - Date: 1997-03-10 09:17:46 Periodic table Optical materials Poor metals Post-transition metals Germanium Metalloids Gallium Optical fiber Tin Chemistry Matter Chemical elements

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