Facies in wells in areas of a hydrocarbon reservoir are predicted or postulated. The machine has an ice bin carried by a pedestal. The denormal sum or difference, predictive shift data and shift compensation data are providable to a shifter to allow the denormal sum or difference to be normalized. The invention also comprises methods for making such medical devices, including the steps of compacting a polyethylene powder and deforming it to impart the oriented structure. The present techniques allow a lightweight encryption algorithm to provide authentication and data security for more secure transfer of selective portions of unencrypted payloads transferred by such protocols as the Hypertext Transfer Protocol. Each light-shielding portion includes an overlapping portion that overlaps and is wider than the corresponding transistor.