Excavation of shafts and research galleries at the Mizunami Underground Research Laboratory (MIU); Construction progress report from fiscal year 2002 to fiscal year 2005 (including a part of fiscal year 2006)

Geoscience Facility Construction Section, Tono Geoscience Center

This progress report presents an outline compilation of construction activities, primary tasks performed, construction progress and problems reported from fiscal year 2002 to fiscal year 2005 (including a part fiscal year 2006). The outline of construction activities is a summary based on the scope of work planned. The main activities are based on the Tono Geoscience Center weekly reports. The construction progress is based on the planned and actual schedules and the Tono Geoscience Center weekly reports. The problems reported are based on accident reports, natural disasters, nonconformance and defects recorded by the Geoscience Facility Construction Section. Plan and actual performance of the MIU construction project No.1 (completion on June 30, 2006) are described in this report.