Having been a shareholder of a previous ASX co takeover by TSX...

Having been a shareholder of a previous ASX co takeover by TSX co, and looking at the Mithril Scheme Booklet (which doesn't go into much detail), MTH shareholders will receive direct registration system advice (DRS) for their resulting Newrange shareholding. This is like issuer sponsored here, where new Newrange shareholders will have a unique shareholding number which is then used to register the shareholding with any broker who trades on TSX. As @MrT83 says, CMC Markets Stockbroking allows you to trade on Canadian exchanges. Commsec does too and there must be more and more platforms available.