Secretariat Meeting – 7 July 2016 Posted 11:42 am by Abby Eager & filed under News. VicRoads/CMPA technical meeting held at Northern Quarries Epping. Attended by: Mark Wagner (Conundrum Holdings) Craig James (E. B. Mawson & Sons) Bill Payne (Quarry Crete) Dr Elizabeth Gibson (CMPA)