Ann: Resignation of Director - Appendix 3Z-MXC.AX, page-2

"Mr Castleden is a geologist with over 20 years of experience in the mineral exploration and development industry. He has worked with Australian mining companies including Mt Isa Mines, Perilya Mines, MPI Mines, LionOre and Breakaway Resources in various exploration, geological and management capacities and has had operational experience in Africa, North and South America and across Australia.
Mr Castleden has specific experience in the gold, nickel and base metal exploration business and has participated in the discovery and delineation of new gold and nickel sulphide systems that have progressed through feasibility studies to successful mining. Mr Castleden is currently a Director of Apollo Consolidated Limited"

With this organization shifting their focus from minerals to cannibals, it would explain why he decided to move on.