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A bulla (or clay envelope) and its contents on display at the Louvre. Uruk period (4000–3100 BC).. A bulla (Medieval Latin for "a round seal", from Classical Latin bulla, "bubble, blob"; plural bullae) is an inscribed clay, soft metal (lead or tin), bitumen, or wax token used in commercial and legal documentation as a form of authentication and for tamper-proofing whatever is attached to it ...
This is a list of iron mines. This list is incomplete; you can help by adding missing items. (August 2022) ... List of countries by iron ore production;
Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel — 98% of the mined iron ore is used to make steel. [2] In 2011 the Financial Times quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more integral to the global economy than any other commodity ...
This lists of mines in India is subsidiary to the list of mines article, and future mines in the country and is organised by the primary mineral output. For practical purposes stone, marbles and other quarries may be included in this list. In India, the underground mine to surface mine ratio is 20:80 [citation needed].
This list is incomplete; you can help by adding missing items. ( March 2012 ) This list of iron ore mines in Australia is subsidiary to the list of mines article and lists working, defunct and planned mines in the country organised by state.
List of iron ore mines in Australia; List of molybdenum mines; List of nickel mines. ... List of mines in India; List of mines in Indonesia; List of mines in Japan.
The Kiruna mine was the largest and most modern underground iron ore mine in the world. [1] [unreliable source?] The mine is located in Kiruna in Norrbotten County, Lapland, Sweden. [1] The mine is owned by Luossavaara-Kiirunavaara AB (LKAB), a large Swedish mining company. In 2018 the mine produced 26.9 million tonnes of iron ore. [2]
The mines are serviced by the BHP Whyalla Tramway, a 3 ft 6 in (1,067 mm) railway which convey the ore to Whyalla's port and steelworks. As of 2016, the operating mines of the Middleback Range are: Iron Duchess, Iron Knight, Iron Duke, Iron Magnet, Iron Baron and Iron Chieftain. [3] Iron ore mines in the Middleback Range include: [4]