Shame when mining rocks, bagging nothing before closure of quarry (8)
I believe the answer is:
ignominy
'shame' is the definition.
(I know that shame can be written as ignominy)
'mining rocks bagging nothing before closure of quarry' is the wordplay.
'rocks' indicates anagramming the letters.
'bagging' indicates putting letters inside (I've seen this in other clues).
'nothing' becomes 'O' (looks like zero - 0).
'before' says to put letters next to each other.
'closure of' says to take the final letters.
The final letter of 'quarry' is 'y'.
'mining' anagrammed gives 'ignmin'.
'ignmin' enclosing 'o' is 'ignomin'.
'ignomin'+'y'='IGNOMINY'
'when' acts as a link.
(Other definitions for ignominy that I've seen before include "Public dishonour" , "Disgrace, odium" , "State of disgrace or humiliation" , "Public shame or disgrace" , "terrible disgrace?" .)