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  2. Hematite - Wikipedia

    en.wikipedia.org/wiki/Hematite

    Hematite (/ ˈ h iː m ə ˌ t aɪ t, ˈ h ɛ m ə-/), also spelled as haematite, is a common iron oxide compound with the formula, Fe 2 O 3 and is widely found in rocks and soils. [6] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe 2 O 3. It has the same crystal structure as corundum ...

  3. Environmental impact of iron ore mining - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of...

    Hematite and magnetite are the most common types of Iron ore. Roughly 98% of iron ore on the global market is used in iron and steel production. [8] The other 2% of iron ore is used to make powdered iron for certain types of steel, auto parts, and catalysts; radioactive iron for medicine; and iron blue in paints, inks, cosmetics, and plastics. [5]

  4. Cut steel jewellery - Wikipedia

    en.wikipedia.org/wiki/Cut_steel_jewellery

    The back of a cut steel button. The basic design of cut steel jewellery is a thin metal baseplate onto which closely placed steel studs were riveted or scewed. [3] [4] The baseplate could be made from various metals such as brass, tin or silver alloys. [3] Early cut steel consisted of individual steel studs that had been polished and inserted ...

  5. Steelmaking - Wikipedia

    en.wikipedia.org/wiki/Steelmaking

    Steel is made from iron and carbon. Cast iron is a hard, brittle material that is difficult to work, whereas steel is malleable, relatively easily formed and versatile. On its own, iron is not strong, but a low concentration of carbon – less than 1 percent, depending on the kind of steel – gives steel strength and other important properties.

  6. Steel cut in ‘milestone’ moment for Royal Navy ... - AOL

    www.aol.com/steel-cut-milestone-moment-royal...

    The production of the Royal Navy’s future hi-tech frigates has reached a “significant milestone” as steel was cut on the third vessel. All five of the Type 31 warships will be built in ...

  7. Oxy-fuel welding and cutting - Wikipedia

    en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

    Oxy-acetylene can cut only low- to medium-carbon steels and wrought iron. High-carbon steels are difficult to cut because the melting point of the slag is closer to the melting point of the parent metal, so that the slag from the cutting action does not eject as sparks but rather mixes with the clean melt near the cut.

  8. 3 Winter Sleep Problems & How to Fix Them - AOL

    www.aol.com/3-winter-sleep-problems-fix...

    Bundling up and going for a 10-minute afternoon walk is one way. If you have SAD, light therapy has been proven to work. A light therapy box mimics sunshine, boosting your mood and alleviating ...

  9. The #1 Nutrient to Help You Sleep When You’re Traveling ...

    www.aol.com/lifestyle/1-nutrient-help-sleep...

    Whole grains like oats and whole-wheat cereal are easy ways to work some magnesium into your morning. Add Chia Seeds. If you have time before you leave, pack some magnesium-rich chia seeds in your ...

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