Corrupt former Labor minister Eddie Obeid and his son Moses have been charged over a $30 million coal deal, as authorities tighten the net around the one-time powerbroker and his family over a series of business deals.

Obeid is already facing jail time after being convicted in June of misconduct in public office over his business dealings at Circular Quay.

Former Labor minister Eddie Obeid is facing jail time over charges relating to Circular Quay cafes. Credit:Ben Rushton

Fairfax Media can now reveal the 72-year-old and his entrepreneurial middle son Moses, 47, were quietly charged last year over a coal deal at Mount Penny in the Bylong Valley near Mudgee.

The identity of a third person charged over the same matter cannot be revealed for legal reasons.