This may help, it is their Corporate Governance PolicyWould guess its from when they buy, http://www.mantlemining.com/pdfs/MNM_Corporate_Governance_Policy-Jan13.pdf
NVA Nova locks in NASDAQ US market listing at a value of only US$3.3M as ASX gets quieter and quieter
MND Monadelphous inks $200M contract with Woodside to help build Pluto LNG – but will it make Scarborough cheaper?