TSX Markets president Rik Parkhill endorsed Australian companys' choice to list on the TSX and said a further seven Australian companies joined the Toronto exchange last year.

He said Australian mining companies can unlock their full value by avoiding Australia's affluent but heavily pressured economy.

"There are simply too many potential targets for the available domestic capital and a host of worthy companies are missing out on growth opportunities as a result," Parkhill said.

Parkhill added that dual listing on the ASX and TSX has proved lucrative for many Australian miners.

"Dual listing on the Australian Stock Exchange and the TSX makes increasing sense," Parkhill said.

"Many North American investors are conscious of the global significance of Australia's mining sector but factors such as the time difference make trading via the ASX inconvenient for them.

"The TSX is in the right time zone for these investors - and they are familiar with it."