Hi ega, unfortunately I'm not much aware of the local ME status on the island, however you got me curious and after a quick check it seems ME is still alive and kicking. From what I've seen of their FB page it's more inclined to scale models of ships and aircraft, but there are also some steam engines as well. **LINK**
As for cast iron, I believe there are a couple of foundries on the island, but as far as I know they do commissioned work such as lamp posts, bollards and other street furniture. So not sure they'll sell raw material as such.