Crossword Genius

Being innovative with a pneumatic drill (8,6)

Ross

I believe the answer is:

breaking ground

I'm a little stuck... Click here to teach me more about this clue!

'pneumatic drill' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'being innovative with a' is the wordplay.
I cannot quite see how this works, but
'being' could be 'king' (king is a kind of being) and 'king' is present in the answer.
'a' is within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Daily Express.
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