“…The following papers were published during t h e reporting period: " A i r Injection Field Measurements t o Determine the Effect of a Heat Cycle on the Permeability of Welded Tuff" (Lee and Ueng, 1 9 9 1 ) ; "Temperature Measurements from the Prototype Barrier System Field Test" (Lin e t a l , 1 9 9 1 ) ; "Thermocouple Psychrometer Measurements of I n S i t u Water Potential Changes i n Heated Welded Tuff" (Ma0 and Wang, 1 9 9 1 ) ; "Performance Implications of Waste Package Fmplacement Orientation" (Wilder, 1991b); "Engineered Barrier Systems and Canister Orientation Studies f o r the Yucca Mountain Project, Nevada" (Wilder, 1 9 9 1~) ; "In S i t u Changes i n the Moisture Content of Heated Welded Tuff Based on Thermal Neutron Measurements" (Ramirez et a l . , 1 9 9 1 ) ; and "Prototype Engineered Barrier System Field Tests -Final Report" (Buscheck e t a l .…”