30.105 J.W. Bloemer – J.A. Eibling – J.R. Irwin, Design of a basin-type solar still, (Battelle Memorial Institute, Columbus, Ohio, 19 may 1964). Step 24: glasse sealed to concrete beams with fillet of asphaltic cement. Hand caulking guns and prepackage asphaltic cement good for small stills; for large stills air-pumped guns and bulk asphaltic cement can be used.