[en] Japan Atomic Energy Agency (JAEA) and Radioactive Waste Management Funding and Research Center (RWMC) concluded the letter of cooperation agreement on the research and development of radioactive waste disposal in April, 2005, and has carried out the collaboration work described above based on the agreement with RWMC. JAEA has carried out the Horonobe Underground Research Laboratory (URL) Project which is intended for sedimentary rock in the Horonobe town, Hokkaido, since 2001, and the Horonobe URL Project includes geoscientific research and research and development on geological disposal technology. Therefore, JAEA carried out this collaboration work as part of the Horonobe URL Project. RWMC carried out an investigation for full-scale demonstration of engineered barrier system and operation technology for high-level radioactive waste disposal, under the contract with the Agency for Natural Resources and Energy, Ministry of Economy, Trade and Industry. The investigation aims to promote public's understanding of the geological disposal. This work includes the full-scale demonstration of operation technology in the horizontal drifts of the Horonobe URL. This report summarizes the results of engineering technology carried out in this collaboration work. In fiscal year 2008 (2008/2009), the overall plan of this collaboration work was settled on and a part of the equipments for transportation of engineered barrier was produced. In addition, it was begun the exhibition of full-scale buffer material block (bentonite) and overpack. (author)