Gentlemen,
There were several periods when the deep south also had issues with Iron supplies. Brook & Gaynor in Columbus, MS (Briarfield Arsenal) sued the CS government for failure to provide sufficient raw iron, as called for in a contract, to compensate for lost revenues. Selma ceased production of large guns at the Naval Gun Foundry for lack of iron of sufficiently high quality twice in 1864. They used the inferior iron on hand to make some large projectiles to stay busy. Major Wm. R. Hunt, former head of Briarfield Arsenal in Columbus, MS, was also much criticized later on in Selma while assigned as the head of Mining and Minerals there. I believe McLaughlin also had supply issues in Atlanta before the evacuation of the Navy facilities there. I'm sure there were other accounts other places. The Army/Navy competition from the start of the war for that scarce resource is well documented.