Examination of progress turning in quota by Bury (13)
I believe the answer is:
interrogation
'examination' is the definition.
(I know that examination can be written as interrogation)
'progress turning in quota by bury' is the wordplay.
'progress turning' becomes 'og' (I am not sure about this - if you are sure you should believe this answer much more).
'in' means one lot of letters goes inside another.
'quota' becomes 'ration' (I've seen this in other clues).
'by' says to put letters next to each other.
'bury' becomes 'inter' (to inter is to put into the ground).
'og' placed within 'ration' is 'rogation'.
'rogation' after 'inter' is 'INTERROGATION'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for interrogation that I've seen before include "Systematic questioning" , "Intense questioning" , "Question" , "Extensive questioning" , "Cross-examination" .)