Crossword Genius

Iron bar sent north over area that covers Indiana? (6)

Ross

I believe the answer is:

fedora

I'm a little stuck... Click here to teach me more about this clue!

'iron bar sent north over area that covers indiana?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'iron bar' is the wordplay.
'iron' becomes 'Fe' (chemical symbol for iron).
'bar' becomes 'dora' (I can't justify this - if you can you should believe this answer much more).
'fe'+'dora'='FEDORA'

Can you help me to learn more?

(Other definitions for fedora that I've seen before include "Headwear" , "O, Fred, a hat becomes you" , "Soft felt hat with a curled brim" , "Brimmed hat with creased crown" , "Felt hat with a creased crown" .)

I've seen this clue in The Times.
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