Are you texting personnel in mining area? (4)
I believe the answer is:
ruhr
'area?' is the definition.
(I know that Ruhr is a area)
'are you texting personnel in mining' is the wordplay.
I cannot really understand how this works, but
'you' could be 'u' (commonly used in online communication) and 'u' is found within the answer.
'personnel' could be 'hr' (Human Resources) and 'hr' is found within the answer.
A single letter 'r' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ruhr that I've seen before include "industrial valley" , "German industrial zone, river" , "Dortmund area?" , "River and industrial region of northwest Germany" , "Major industrial region of north-west Germany" .)