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Manganese is a chemical element with the symbol Mn and atomic number of 25. It is found as the free element in nature (often in combination with iron), and in many minerals. The free element is a metal with important industrial metal alloy uses.
In 1917, three men—B.R. Jefferson, B. Edwards, and J. Marrs—discovered a manganese deposit with a high concentration of 20% to 40%. [6] Coinciding with World War I, open-pit mining operations began at the mine the same year, supplying the United States military with manganese for military equipment such as steel combat helmets.
Manganese has no satisfactory substitute in these applications in metallurgy. [53] Steelmaking, [74] including its ironmaking component, has accounted for most manganese demand, presently in the range of 85% to 90% of the total demand. [61] Manganese is a key component of low-cost stainless steel.
KSNT (channel 27) is a television station in Topeka, Kansas, United States, affiliated with NBC.It is owned by Nexstar Media Group alongside low-power, Class A Fox affiliate KTMJ-CD (channel 43); Nexstar also provides certain services to dual ABC/CW+ affiliate KTKA-TV (channel 49) under joint sales and shared services agreements (JSA/SSA) with Vaughan Media, LLC.
More about John King. King has three children, two - a son and a daughter - from his first wife Jean Makie, and one with fellow CNN anchor Dana Bash. King and Bash tied the knot in May 2008 and ...
The station first signed on the air on September 1, 1955, as KARD-TV. The station, owned by the Wichita Television Corporation [3] was the fourth television station to sign on in the Wichita–Hutchinson market, after KAKE (channel 10)—which signed on in October 1954, KEDD (channel 16)—which signed on in August 1953, and KTVH (channel 12, now KWCH-DT)—which signed on in July 1953.
Purvis, currently the evening anchor for Channel 4-KDBC, has been a journalist for over 40 years. His last newscast is Friday, Aug. 2. Purvis’ retirement comes as Sinclair announced changes to ...
The lowest level of the ore zone is a 0.1 to 0.5 metres (3.9 in to 1 ft 7.7 in) layer of massive manganese oxides and hydroxides with some manganese carbonate (rhodochrosite). Above this is the main ore zone, a 3 to 9 metres (9.8 to 29.5 ft) layer of plates of similar minerals between bands of clay, silica and iron bearing material.