A trade halt is only required to stop the market reacting to the spread of news from involved parties about the progress of the company, until all shareholders have a chance to react to the news. Stopping a privileged few from gaining an unfair advantage.
In the case of BG production, only Pablo and Jerko (and other internal staff) are privileged to this information. They are bound by certain non-disclosure agreements and insider trading laws. So no need to to Trade Halt for them.
In the case of the JORC, I would be surprised if the independent reviewer releases information to anyone about AGY before AGY have the information released to market, again this would be insider trading laws and non-disclosure agreements. So possibly no need for a Trade Halt here.
A trade halt would be required if for example they were inviting news media to the site to take photos and write stories, where news may be leaked before the official announcement.
Of course if they try to ship sample product to customers before the market has such a related announcement, then a trade halt may be required here.
Your time frames may be correct, we will know in due time. But I'm unsure if a trade halt is required due to the expectedly small number of people and 3rd parties involved.
So, I guess what I'm trying to say is, I don't think there's a need for a trade halt. The announcements may just be delivered for the market to consume.
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