Crossword Genius

Railway workers put horse in empty sidings (8)

Ross

I believe the answer is:

shunters

'railway workers' is the definition.
(workers shunting trains between lines)

'horse in empty sidings' is the wordplay.
'horse' becomes 'hunter' (I've seen this before).
'in' means one lot of letters goes inside another.
'empty sidings' becomes 'ss' (I can't explain this - if you can you should believe this answer much more).
'hunter' inserted inside 'ss' is 'SHUNTERS'.

'put' is the link.

(Another definition for shunters that I've seen is " railway engines".)

I've seen this clue in The Independent.
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