Acquire layer of coal to haul up in Welsh town (7)

I believe the answer is:

maesteg

'welsh town' is the definition.
(I've seen this before)

'acquire layer of coal to haul up' is the wordplay.
'acquire' becomes 'get' (synonyms).
'layer of coal' becomes 'seam'.
'to haul up' is a reversal indicator (I've seen 'hauled up' mean this).
'get'+'seam'='getseam'
'getseam' back-to-front is 'MAESTEG'.

'in' is the link.

(Another definition for maesteg that I've seen is " Welsh town".)

I've seen this clue in The Guardian.

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