The portfolio would include their Kalgoorlie super pit 50/50 joint-venture in Western Australia, as well as other regional assets such as Porgera, Tanami and Boddington mines.
The 1,000-km (620-mile) rail line is used by miners including Glencore, MMG Ltd and South 32 to carry zinc and lead concentrate from the Mt Isa region.
The miners signed a binding arrangement pursuant to which Titan will acquire all of the issued and outstanding Core Gold common shares by way of a share exchange.