Timeline
- December 15, 1918: Kurihara Tramway (栗原軌道, Kurihara Kidō?) established
- December 20, 1921: Ishikoshi - Sawabe (8.85 km)
- December 17, 1922: Sawabe - Iwasasaki (later Kurikoma) (7.73 km)
- December 3, 1941: Classification from tramway to railway, renamed to Kurihara Railway (栗原鉄道, Kurihara Tetsudō?)
- December 1, 1942: Iwasasaki - Hosokura Mine (ca. 9.62 km), 26.2 km stretch completed
- September 21, 1952: Electrified DC 750V
- September 26, 1955: Regauged from 762 mm to 1067 mm for through operation to the then Japanese National Railways
- November 29, 1955: Renamed to Kurihara Electric Railway (栗原電鉄, Kurihara Dentetsu?)
- June 1, 1964: Bus and train services in the area combined to a single company, Miyagi Chūō Kōtsū (宮城中央交通?)
- August 31, 1968: Bus service separated to Miyagi Central Bus (宮城中央バス, Miyagi Chūō Bus?)
- February 25, 1969: Renamed back again to Kurihara Electric Railway
- March 29, 1987: Hosokuura - Hosokuura Mine freight service closed
- November 1, 1988: Hosokuura - Hosokura Mine (0.8 km) abandoned (in some source on October 27)
- June 16, 1990: Hosokura - Hosokura Mine Park Mae (0.2 km) opened. Hosokura Station abandoned
- December 15, 1993: Mitsubishi Material transferred ownership of the Kurihara Electric Railway to the then five towns (in 2007, 2 cities) along the line
- May 1, 1995: Renamed to Kurihara Den'en Railway. Electric operation terminated. Conductorless operation introduced
- April 1, 2007: Railway service abandoned
Read more about this topic: Kurihara Den'en Railway Line