○Hideki Kuma¹, Hisao Fukuoka² (1. National Institute of Technology Matsue College, 2. Tokyo Denki University)

○Misuz Komatsu², Hideki Kuma¹ (1. National Institute of Technology Matsue College, 2. The Yu-no-oku Museum of Gold Mining History)

○NOBNUAKI KUMAGAI¹ (1. University of Hyogo)