A method and system for acquiring, processing, storing, and displaying x-ray mammograms Mp tomosynthesis images Tr representative of breast slices, and x-ray tomosynthesis projection images Tp taken at different angles to a breast, where the Tr images are reconstructed from Tp images . The hinge connection is preferably provided by a cylindrical keyway and cylindrical key combination. The process of the present invention results in a highly purified dry natural gas product stream.