Ann: XST: Successful Placement and Increase of Borba Working Int, page-138

Hi Freestar, wrt TH the whole idea of a TH is to stop anyone becoming aware of the information before its release to the ASX as an announcement. Therefore if the company is of the view that information could leak preferentially then it should call a TH beforehand.
The issue with an Independent Report is that a common practise will be for the Expert to provide a draft to the company prior to the final report - this is to ensure that there aren't any glaring points (they can happen) that may need to be revised due to oversight for whatever reason. (Not always the case though).

On the other hand, some companies are very happy to call for a TH (nowadays you can just call for a Pause in trading, which is usually of lesser duration), the reason being it highlights to the market some market- sensitive news is due out. (Sort of a 'marketing ploy' if you want to be cynical.)

I would expect there to be at least a Pause in trading, or even TH, because it probably will be discussed with its JV partner XST beforehand, and may well include news regarding Borba spud date/drill rig onsite.