Printing office in place with hard ground (6)
I believe the answer is:
chapel
'printing office' is the definition.
(chapel can mean a newspaper trade union)
'place with hard ground' is the wordplay.
'with' says to put letters next to each other.
'hard' becomes 'h' (abbreviation used in pencil classifications).
'ground' is an anagram indicator ('grind' the letters into a new form).
'place'+'h'='placeh'
'placeh' is an anagram of 'CHAPEL'.
'in' is the link.
(Other definitions for chapel that I've seen before include "NUJ members?" , "Nonconformist church" , "Perhaps part of cathedral" , "Local printers" , "Branch of a newspaper trade union" .)