By 2000 the plant in Neuves-Maisons had become part of the Riva Group and as of 2011 produces mainly long products including rebar from scrap metal using electric arc furnaces.

[5] The organisation Société Bouguéret, Martenot et Cie.[note 1] was formed in 1846 from the merging of the businesses of forgemasters in Allier and Châtillon.

It was affected negatively by the Washington Naval Treaty as production of battleship turrets, gun fittings and projectiles was an important element of its business, after which the company diversified into mechanical engineering, including turbines, railway and other transport equipment.

The Chatillon wire mill company merged with the Société des Hauts Forneaux de la Chiers, and the Compagnie des Forges de Châtillon-Commentry-Biache to form the Compagnie industrielle Chiers Châtillon (CICC) in 1977,[16] which was merged into Usinor in 1979.

[1][17] After acquisition by Usinor in 1979 the works in Neuves-Maisons underwent restructuring - a transition to electrically produced steel, and a concentration towards long products took place in the 1980s: the Siemens-Martin plant and coke ovens were closed, and a new continuous casting plant built, in 1985 all the liquid phase operations ended and a UHP electric arc furnace installed.

In 1993 the plant along with works in Montereau becomes part of the société des aciers d’armature du béton (SAM), and three cold drawing lines were installed.

In 2006 production was from scrap metal by electrical plant producing continuous cast billets, with processing to wire rod and rebar.