Your half-baked mining management is a source of disgrace (8)
I believe the answer is:
ignominy
'disgrace' is the definition.
(I know that disgrace can be written as ignominy)
'your half-baked mining management is a source of' is the wordplay.
I cannot quite understand how this works, but
'of' could be 'o' and 'o' is found in the answer.
an anagram of 'mining' is 'ignmin' which is within the left over letters.
A single letter 'y' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ignominy that I've seen before include "Public shame or disgrace" , "Disgrace, odium" , "Public dishonour" , "State of disgrace or humiliation" , "terrible disgrace?" .)