sponsored by ASTM committee C-1 on cement. sponsored by ASTM Committee E-9 on Fatigue. sponsored by ASTM Committee D-20 on Plastics. sponsored by ASTM Committee E-35 on Pesticides. sponsored by ASTM Committeee D-18 on soil and rock. sponsored by ASTM Committee E-31 on Computerized Systems. sponsored by ASTM Committee E-8 on Nomenclature and Definitions. sponsored by Committee E-28 on Mechanical Testing. sponsored by the IEEE Committee on Nonlinear Magnetics sponsored by Canadian National Committee on Rock Mechanics.