Our special annular types include various types of well configurations. These variations include: side well, T-well and L-well. Other special considerations consist of whether the signal from each segment is summed or isolated. We can arrange PMTs on each end of the annulus in order to accommodate coincidence counting. And as already has been discussed, we can construct these annular detectors with ultra-low background WIMPScint NaI(Tl) material.