During 1968, in Ikino Matsubara near Meinohama Station, the use of sandstones and granites were confirmed in the construction of the Genk Brui, then in 1969, Basalt and granite were discovered to be used as well, which was found in Imazu near Shimoyamato Station, a railway station on the Chikuhi Line in Nishi-ku, Fukuoka, Japan that JR Kyushu currently operates.
Year Ikino Matsubara near Meinohama Station Use of sandstone and granite confirmed. Basalt and granite were used, differing by location. Imazu near Shimoyamato Station Shimoyamato Station () is a railway station on the Chikuhi Line in Nishi-ku, Fukuoka, Japan. JR Kyushu 
