DURING YEAR 2 OF THE PROJECT CO-I POSTON S PRIMARY TASKS WILL BE: 1. TO CO-LEAD MEASURING THE LOSS RATE OF WATER FROM SAMPLES OF FRESH AND SALTY WATER WHEN EXPOSED TO PRESSURES AND TEMPERATURES ANALOGOUS TO THE POST-IMPACT CONDITIONS EXPECTED AT VESTA/CERES. IN PARTICULAR HE WILL DEVELOP THE MASS BALANCE SYSTEM. 2. TO CO-LEAD THE PROCESSING AND ANALYSIS OF THE RESULTS FROM THE AFOREMENTIONED EXPERIMENTS (POINT #1). DURING YEAR 3 OF THE PROJECT CO-I POSTON S PRIMARY TASKS WILL BE: 1. TO ASSIST WITH SYNTHESIZING OF THE RESULTS FROM ALL PREVIOUS TASKS AND THE WRITING OF PEER-REVIEWED PUBLICATIONS. 2. TO ASSIST WITH THE PREPARATION OF THE DATA FOR ARCHIVING.