Miner hurries over fences in industrial region (4)
I believe the answer is:
ruhr
'industrial region' is the definition.
(I've seen this before)
'miner hurries over fences in' is the wordplay.
'fences in' indicates the answer is hidden within the clue.
'over' shows that the letters should be reversed in order.
'rhur' is hidden in the letters of 'miner hurries'.
'rhur' written backwards gives 'RUHR'.
(Other definitions for ruhr that I've seen before include "Major industrial region of north-west Germany" , "Herman industrial area" , "German industrial region" , "Flower from Germany" , "industrial valley" .)