The company said it has given notice of closure to its employees, vendors and customers as part of an effort to make the transition as smooth as possible.
It said it does not plan to make any layoffs during the first two months of the shutdown in order to comply with labor laws and continue ongoing maintenance activities on its furnaces.
The company did say its in-house slag processing unit will remain operational during the shutdown.
Felman employed 250 hourly and salary workers when it celebrated the 60th anniversary of the New Haven plant last July.
The Foote Mineral Co. built the plant in 1952, and it has had a tumultuous history. The plant closed and reopened numerous times as some owners declared bankruptcy and sold the plant to new owners.
The plant's most recent closure was in 2006, when Felman bought it for $20 million from bankrupt Highlander Alloys. Felman invested an additional $80 million to restart operations at the plant that year.
Contact writer Jared Hunt at busin...@dailymail.com or 304-348-4836.