Baotou Steel
Baotou Iron and Steel Group, Baotou Steel or Baogang Group is an iron and steel state- owned enterprise in Baotou, Inner Mongolia, China.
It was reorganized in 1998 from Baotou Iron and Steel Company established in 1954.
It is the largest steel enterprise in Inner Mongolia.
It has a large production base of iron and steel and the largest scientific research and production base of rare earths in China.
Its subsidiary company, Inner Mongolia Baotou Steel Union, was established and listed on the Shanghai Stock Exchange in 1997.
Fengbao Iron and Steel
Henan Fengbao Iron and Steel Company Limited( 河南凤宝钢铁有限公司) was established in 2001 when the formerly state- owned Chinese enterprise was restructured according to the modern enterprise system to form a limited liability company.
The company's activities include melting iron and steel smelting, seamless steel pipe, machinery manufacturing, power generation, international trade, and others.
It is a large- scale iron and steel company, and is a member unit of China's Iron and Steel Industry Association.
It is one of the nation's 1,000 largest industrial enterprises, the country's top 500 private enterprises in Henan Province, and 100 key enterprises in Henan Province.
Chongqing Iron and Steel Company
Chongqing Iron and Steel Company Limited, or CISC is an iron and steel manufacturing state- owned enterprise in Chongqing, China.
Formerly" Hanyang Iron Plant" in Wuhan, it was established in 1890 during Qing Dynasty by Zhang Zhidong, the Governor of Hu- Guang Area( now separately Hubei, Hunan and Guangdong).
It, together with Daye Iron Mine and Shanghai Steel Plant, was relocated to Dadukou, Chongqing in 1938 during the Second Sino- Japanese War.
After 1949, the plant had been renamed as" Chongqing Iron and Steel( Group) Company".
In 1995, the company was reformed into" Chongqing Iron and Steel( Group) Company Limited".
Its H shares were listed on the Hong Kong Stock Exchange in 1997, while its A shares were listed on the Shanghai Stock Exchange in 2007.
Oliver Iron and Steel Corporation
The Oliver Iron and Steel Corporation was a manufacturer of iron and steel hardware including nuts, bolts, screws, and horseshoes in Pittsburgh, Pennsylvania, USA.
The company was originally Oliver Brothers and Phillips after the Oliver Brothers concern merged with the Phillips Iron Works, later Oliver Iron and Steel Company before becoming Oliver Iron and Steel Corporation in 1922.
In its early times Henry W. Oliver was president of the company.
The company controlled the Allegheny and South Side Railway by stock ownership.
Until 1897, the Lower Works at Woods Run in the city of Allegheny (now Pittsburgh's North Side) included rolling mills.
In that year, the Schoen Pressed Steel Company bought the Lower Works.
The Upper Works, in the South Side, made hardware from iron and steel.
Around 1951, the Berry Motors Company of Corinth, Mississippi was acquired and made the Berry Division of Oliver Iron and Steel.
In late September 1954 the company suffered a work stoppage.
Contemporary newspaper accounts mentioned threats of plant closure at the time unless the strike ended.
During 1955 longtime president Theodore F. Smith moved on to the Kaiser Engineers division of the Henry J. Kaiser Company, and Paul H. Starzman was elected the new president.
The Berry Division was subject to an antitrust lawsuit filed on June 11, 1956 At about the same time, the fastener business was sold to Pittsburgh Screw and Bolt Company, and the pole line hardware business was merged into the Oliver Electric Company of Battle Creek, Michigan.
The company had lost money each of the previous 4 years.
Oliver Iron and Steel merged into the Oliver Tyrone Corporation effective December 31, 1956.
As a new plant for Pittsburgh Screw and Bolt Company was started outside Mount Pleasant, Westmoreland County in 1957 the former Oliver Iron and Steel facilities in the Pittsburgh South Side were soon empty.
The facilities and land, as well as the Allegheny and South Side Railway, were sold to Carson Industrial Development Corporation, who planned an industrial and warehousing park on the land.
Pittsburgh City Planning Department aerial photos from 1962 show the land cleared to dirt.
Wuhan Iron and Steel Co., Ltd.
Wuhan Iron and Steel Co., Ltd. known as WISCO( and formerly WGGF, abb. of), is a subsidiary of listed steel maker Baoshan Iron and Steel; Wuhan Iron and Steel Co., Ltd. was a subsidiary of state- owned Wuhan Iron and Steel Corporation until 2016.
The main business was the steel plant in Qingshan District, Wuhan, while the parent company had transformed from steel making company to holding company and M&A vehicle.
On 21–22 September 2016, a merger between Baosteel Group and Wuhan Iron and Steel Corporation was announced.
Wuhan Iron and Steel Company Limited would be takeover by the listed counterpart of Baosteel Group in an all- share deal, while all the rights of Wuhan Iron and Steel Corporation would be transferred to Baosteel Group, as both corporation were supervised by the same entity State- owned Assets Supervision and Administration Commission of the State Council.
On 7 July 2016, after a heavy net loss in 2015, Wuhan Iron and Steel Corporation also announced the group would reduce their production capacity by 4.42 million metric tons, which Wuhan Iron and Steel Co Ltd would be cut 1.40 million metric tons, or about 31.7% of the group total.
Nanjing Iron and Steel Group
Nanjing Iron and Steel Group Corp., Ltd. is a Chinese conglomerate company based in Nanjing, Jiangsu Province, China.
It was a state- owned enterprise, but now it is a joint venture of Nanjing Iron and Steel Venture Investment( about 36.07% owned by the worker union of Nanjing Iron and Steel Group) and state- owned enterprise Nanjing New Industrialization Investment Group in a 51–49 ratio.
Nanjing Iron and Steel Group formed another joint venture with Fosun International as an intermediate holding company of Nanjing Iron and Steel Company, in a 60–40 ratio.
On 31 December 2015 Fosun International appointed Nanjing Iron and Steel Group as a proxy for 1/ 6 of their voting rights, making the voting rights were equally shared between Nanjing Iron and Steel Group and Fosun International after 31 December 2015.
Hansteel
Handan Iron and Steel Group or Hansteel is a state- owned iron and steel enterprise engaging in the manufacturing, processing and sales of black metal, billet, steel rolling, carbamide, sintering mineral, metallurgical machinery parts and coke.
It was established in 1958 and it is headquartered in Handan, Hebei, China.
Its subsidiary company, Handan Iron and Steel Company Limited was established in 1996 and listed on the Shanghai Stock Exchange in 1998.
In 2008, Hansteel merged with Tangsteel Group of Tangshan, Hebei, to become Hebei Iron and Steel Group, which is the fifth largest steel producer in the world.
Their listed subsidiaries were also merged to form Hebei Iron and Steel Company.
Kline Iron and Steel
Kline Iron and Steel was a company based in Columbia, South Carolina.
Established on February 23, 1923, as Kline Iron and Metal Co., since 1953 was primarily known for the construction of broadcast towers.
This includes the world's tallest completed man-made structure, the KVLY- TV mast, surpassed only by the recently completed Burj Khalifa.
History Timeline:
Tangsteel Group
Tangshan Iron and Steel Group Company Limited, or Tangsteel, founded in 1943 and headquartered in Tangshan, Hebei, is one of the largest steel manufacturing state- owned enterprise in China.
Its subsidiary and listed company, Tangshan Iron and Steel Company Limited was established in 1994 and it was listed on the Shenzhen Stock Exchange in 1997.
In 2005 it formed a joint venture Jingtang United Iron and Steel with Shougang Group.
Tangsteel Group owned 49%.
In 2006, Tangsteel merged with Xuanhua Iron& Steel Group and Chengde Iron and Steel Group to form" New Tangsteel Iron and Steel Group".
In 2008, Tangsteel merged with Hansteel Group to form" Hebei Iron and Steel Group", which is the largest steel maker in China and the fifth largest in the world.
in 2010 the Jingtang United Iron& Steel was sold back to Shougang Group.
Hummelstown Brownstone Company
From 1863 to 1929, the Hummelstown Brownstone Company( HBC) owned and operated quarries in the Hummelstown, Pennsylvania area which produced Hummelstown brownstone, once widely used as a building stone throughout the USA.
The quarries of the HBC are listed on the National Register of Historic Places.

Question: Which one was established first, Kline Iron and Steel or Hummelstown Brownstone Company?
Answer: Hummelstown Brownstone Company