The only
classical "Forge" I know about (and I don't know too much about classical music

) is the opening scene from the opera "La Vida Breve/Life is Short" by Manuel de Falla. There is a chorus of men working in a forge. It's not an industrial one and also it bears little resemblance, if at all, with Prokofiev's style, as it is a Spanish melody.
I am sure this is of no help to you but I couldn't help posting

.