Raw material could be in this press, alternatively, I'm told (7)

I believe the answer is:

ironore

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'raw material could be in' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'press alternatively i'm told' is the wordplay.
'press' becomes 'iron' (ironing is a kind of pressing).
'alternatively' becomes 'or'.
'i'm told' shows a homophone (sound like).
'or' is a homophone of 'ore'.
'iron'+'ore'='IRONORE'

'this' is the link.

Can you help me to learn more?

I've seen this clue in The Irish Times.

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