A senior member of Cumbria County Council walked out of a cabinet meeting in protest this morning - and has since quit his post.
Councillor Tim Knowles says that he felt compelled to go as a matter of principle.
His resignation comes a week after the cabinet voted against plans to look for a possible site to bury nuclear waste in the west of the county.
He spoke exclusively to Samantha Parker, and you can watch her full report below.
Councillor Tim Knowles has resigned from Cumbria County Council's cabinet.
At the cabinet meeting in Carlisle, Councillor Knowles took the opportunity to read out a resignation speech.
Councillor Knowles, who is a member for Cleator Moor and Frizington for the Labour Party, supported the move towards looking for a possible site to bury high level nuclear waste in west Cumbria- excluding the National Park.
Before he left Councillor Knowles thanked officers and his cabinet colleagues.