Fix lack of cohesiveness issues in the text:
Nautilus Minerals Inc. (Nautilus) is engaged in commercially exploring the ocean floor for copper, gold, silver and zinc seafloor massive sulphide (SMS) deposits, and mineral extraction from an SMS system.
Nautilus Minerals Inc. (Nautilus) was engaged in commercially exploring the ocean floor for copper, gold, silver and zinc seafloor massive sulphide (SMS) deposits, and mineral extraction from an SMS system.