The trading halt is clearly to do with drilling results.
Because MEP stated the following, it seems logical as others have said, probable visible mineralization, which could make it VERY interesting.
In requesting a Trading Halt, MEP stated the following:
"The trading halt is requested in light of pending drilling results. The halt is requested to enable the Company to review the drilling data and to prepare a suitable release to the market. The Company anticipates that it will be in a position to make an announcement to the market pre-open Monday morning 26 September 2016."
MEP Price at posting:
8.3¢ Sentiment: Hold Disclosure: Held