*Ryouichi Kikuta¹, Satoshi Tamate², Tomohito Hori² (1. Japan Speed Shore, 2. National Institute of Occupational Safety and Health, Japan)

*Satoshi Tamate¹, Tomohito Hori¹, Ryoichi Kikuta² (1. National Institute of Occupational Safety and Health, Japan, 2. Japan Speed Shore Co., LTD)

*Yukinori Miyamoto¹, Norihiro Matsuyama¹, Ryuuta Kobayashi², Daisuke Hagimori² (1. Daidoc Corporation, 2. Toda Corporation)

*Norihiro Matsuyama¹, Yukinori Miyamoto¹, Ryuuta Kobayashi², Daisuke Hagimori² (1. Daidoc Corporation, 2. Toda Corporation)

*Seiichi NARUSHIMA Narushima¹, Mikio Kubo², Takuya Maeshima³ (1. Kaigumi, 2. Eternal Preserve, 3. Nihon University)

*Gaku Shinntani¹, Feyzullah Gulsen¹, Hajime Oku¹ (1. TODA CORPORATION)

*Naohiro Sakurada¹, Kei Konishi¹, Keiichiro Maeda¹ (1. OBAYASHI CORPORATION)