Its very simple they are months behind with getting assays back, no mystery just the work load at the Lab, perhaps they are having trouble keeping or finding staff as well , Mel cant release results if he hasn't recieved them..
Stressing and whinging won't change the situation, if you think they are deliberately withholding drill results then produce some evidence or take it up with Mel, you won't find the answer here
Cheers Whisky