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2. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   Metal roof. A metal roof is a roofing system featuring metal pieces or tiles exhibiting corrosion resistance, impermeability to water, and long life. It is a component of the building envelope. The metal pieces may be a covering on a structural, non-waterproof roof, or they could be self-supporting sheets.

3. Iron Mountain Mine - Wikipedia

   en.wikipedia.org/wiki/Iron_Mountain_Mine

   Listed. 09/08/1983. List of Superfund sites. Iron Mountain Mine, also known as the Richmond Mine at Iron Mountain, is a mine near Redding in Northern California, US. Geologically classified as a "massive sulfide ore deposit", the site was mined for iron, silver, gold, copper, zinc, quartz, and pyrite intermittently from the 1860s until 1963.

4. Zinc mining in the United States - Wikipedia

   en.wikipedia.org/wiki/Zinc_mining_in_the_United...

   In 2019, 552,400 tonnes of zinc, 71 percent of US mined zinc production, and 4.2 percent of world zinc production, came from Teck Resources' Red Dog mine, the world's most productive zinc mine, in northwest Alaska, near Kotzebue. [2] [3] [1] The mine opened in 1989. [4] The zinc is shipped as concentrate to foreign smelters.

5. Hot-dip galvanization - Wikipedia

   en.wikipedia.org/wiki/Hot-dip_galvanization

   Hot-dip galvanization is a form of galvanization. It is the process of coating iron and steel with zinc, which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around 450 °C (842 °F). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O 2) to form zinc oxide ...

6. Zinc - Wikipedia

   en.wikipedia.org/wiki/Zinc

   In most single-tablet, over-the-counter, daily vitamin and mineral supplements, zinc is included in such forms as zinc oxide, zinc acetate, zinc gluconate, or zinc amino acid chelate. [ 167 ] [ 168 ] Generally, zinc supplement is recommended where there is high risk of zinc deficiency (such as low and middle income countries) as a preventive ...

7. Cerro Gordo Mines - Wikipedia

   en.wikipedia.org/wiki/Cerro_Gordo_Mines

   The Cerro Gordo Mines are a collection of abandoned mines located in Cerro Gordo in the Inyo Mountains, Inyo County, near Lone Pine, California. Mining operations spanned 1866 to 1957, producing high grade silver, lead, zinc ore, and more rarely gold ore and copper ore. [1] Some ore was smelted on site, but larger capacity smelters were ...