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Osmium is a hard, brittle, blue-gray metal, and the densest stable element—about twice as dense as lead. The density of osmium is slightly greater than that of iridium ; the two are so similar (22.587 versus 22.562 g/cm 3 at 20 °C) that each was at one time considered to be the densest element.
Maryland Steel, in Sparrows Point, Maryland, US, was founded in 1887. It was acquired by Bethlehem Shipbuilding Corporation in 1916 and renamed as the Bethlehem Sparrows Point Shipyard . The shipyard was sold in 1997 to Baltimore Marine Industries Inc.
Maryland Steel Company established the Sparrows Point yard in 1889, and it delivered its first ship in 1891. Bethlehem Steel Corporation acquired the Sparrows Point shipyard in 1917. During the mid-twentieth century, Bethlehem Steel Shipbuilding (BethShip)'s Sparrows Point yard was one of the most active shipbuilders in the United States ...
The company operated hydropower and reduction plants in Niagara Falls, NY (1895), Shawinigan Falls, Quebec (Northern Aluminum Company), mining operations in Bauxite, AR (1901), and reduction facilities in East St. Louis, IL (1902). "The Aluminum Company of America" became the firm's new name on January 1, 1907. [14]
Most definitions of the term 'refractory metals' list the extraordinarily high melting point as a key requirement for inclusion. By one definition, a melting point above 4,000 °F (2,200 °C) is necessary to qualify, which includes iridium, osmium, niobium, molybdenum, tantalum, tungsten, rhenium, rhodium, ruthenium and hafnium. [2]
An aluminum company has singled out northeastern Kentucky as its preferred site for a new aluminum smelter that would bring about 1,000 permanent jobs to an Appalachian region hard hit by the loss ...
The value of iron and steel produced in 2014 was $113 billion. [2] About 0.3% of the US population is employed by the steel industry. [3] As of 2022, major steel-makers in the United States included Cleveland-Cliffs, Carpenter Technology, Commercial Metals Company, Nucor, Steel Dynamics, and U.S. Steel. [4]
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