This conference is one of a number of conferences that form part of TheAusIMM's Towards 2000 initiative on resource and reserve estimation issues whichwill eventually form a Monograph in their own right. This particular conferenceorganised by the Illawarra Branch of The Institute focused on the data used tointerpret orebodies. It examined the definition of the resource database itsvalidation geological interpretation and auditing the resource database.Transcriptions of the Q&A sessions are also included.