Assay results and delays
Reading between the lines the most likely scenario is that the majority of the assays are complete, but a few may have to have been re-run. A gold re-run will take a full day when fire assayed.
Re-runs are done for various reasons such as incorrect flux mix for fire assays. Even very experienced assayers do not always get the mix correct for the core composition. A standard flux mix may need adjustments made for re-runs. Antimony/Bismuth/other elements can be miserable if present in high doses. Rarely will the assayer miss the 2nd time as he will know exactally what he is dealing with after the 1st firing. (Experience)
Also and more probable in this case is that some of the gold assays were very high and needed to be varified by re-sampling and re-firing. This delay is good for us. It means that the sample size used was too large and not all the gold was recovered in the sample. Re-run results are often higher when this happens. Labs try to use as large a sample size as practical to give an accurate representation of the sample analyzed.
Perhaps all the gold/silver beads are done and still need to be cleaned up by analysis for Bismuth (by AA) to achieve an accurate analysis.
We want accuracy not speed, though sometimes difficult to endure.
Solver