Thin mist’s disorientated metal workers (9)
I believe the answer is:
tinsmiths
'metal workers' is the definition.
(I've seen this before)
'thin mist's disorientated' is the wordplay.
'disorientated' indicates anagramming the letters.
'thin'+'mists'='thinmists'
'thinmists' with letters rearranged gives 'TINSMITHS'.
(Other definitions for tinsmiths that I've seen before include "Mist thins (anag.)" , "Metal workers" , "metalworkers?" , "Craftsmen" .)