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Tonne. The tonne (/ tʌn / ⓘ or / tɒn /; symbol: t) is a unit of mass equal to 1,000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the short ton (United States customary units) and the long ton (British imperial units).
Harbour ton, used in South Africa in the 20th century, was equivalent to (2,000 pounds (907 kg)) or 1 short ton. Assay ton (abbreviation 'AT') is not a unit of measurement but a standard quantity used in assaying ores of precious metals. A short assay ton is approximately 29.17 g (1.029 oz) and a long assay ton is approximately 32.67 g (1.152 oz).
The biggest steel producing country is currently China, which accounted for 54% of world steel production in 2023. [ 1 ] In 2020, despite the COVID-19 pandemic, China became the first country to produce over one billion tons of steel. [ 2 ] In 2008, 2009, 2015 and 2016 output fell in the majority of steel-producing countries as a result of the ...
The United States is also a major importer of iron and steel, as well as iron and steel products. Employment as of 2014 was 149,000 people employed in iron and steel mills, and 69,000 in foundries. The value of iron and steel produced in 2014 was $113 billion. [1] About 0.3% of the US population is employed by the steel industry.
The aluminum industry in the United States in 2023 produced 860 thousand metric tons of aluminum from refined metal ore (primary production), at six smelters. In addition, US industry recycled 3.4 million tons of aluminum (so-called secondary production aluminum). [ 1 ] Total annual imports of metal and alloy for use in secondary production ...
Contraction: 1979–1984. US production of iron and steel peaked in 1973, when the US industry produced a combined total of 229 million metric tons of iron and steel. But US iron and steel production dropped drastically during the recession of the late 1970s and early 1980s.
The short ton (abbreviation tn[ 1 ]) is a measurement unit equal to 2,000 pounds (907.18 kg). It is commonly used in the United States, where it is known simply as a ton;[ 1 ] however, the term is ambiguous, the single word " ton " being variously used for short, long, and metric tons. The various tons are defined as units of mass. [ 2 ]
Usable iron ore production in million metric tons for 2015 ... of iron ore in concentrate pellets and 13.6 million tons of crude steel. Of the 13,600,000 t ...