entitlement & acceptance, page-10

My reading of the prospectus is the shortfall offer will only be open to the "Underwriters" which is a defined term in the Prospectus:

Underwriter means Sundowner International Limited (a company associated with Mr HD Kennedy) as to 33.33%; Michael John Fry as to 33.33%; Corralline Pty Ltd as
to 15.30%; Kala Nominees Pty Ltd as to 15.30% and
Resource Services International (Aust) Pty Ltd as to the
remaining 2.74%. Each of Corralline, Kala and
Resource is a company associated with Mr PL
Munachen and Resource is also associated with Mr
EA Myers, the company secretary of Norwest.

fyi, shortfall offers can be made to existing holders without the need for a new propsectus (as would normally be required under s708AA or 1012D) by virtue of ASIC CO 08/35

Cheers,
TheAge