"These biweekly reports are intended to provide an informal and rapid means of disseminating information among project personnel. It is composed of brief status reports prepared by subtask leaders in a flexible format. It should be considered preliminary in nature. This work will be summarized in a Task Final Report at its completion. Calculation and experimental efforts related to fracture and compaction processes are progressing on schedule. Experimental data indicate encouraging results for continuous in situ operation. Efforts on retorting calculations have concentrated on testing the LERC and LLL retort models and a two-dimensional flow model. Field operation concept evaluation has been directed toward options for void volume creation. The engineering/economic evaluation task has developed a design basis and a preliminary process concept design for the Phase I retort. Process diagrams and heat and material balances are included in this report. Preliminary cost figures have been developed and will be presented in a future biweekly report."