# Relationship history for MSHA mine 1517541

Current hierarchy: **Massey Energy Company → Pegs Branch Energy Mining Co. → Mine # 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Massey Energy Company → Mine # 1; 1993-01-01 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Joby  Fields → Mine # 1; 1993-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Road Fork Development Company Inc → Mine # 1; 1994-05-01 to 1994-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Road Fork Development Company Inc; 1994-05-01 to 1994-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Black Diamond Coal Corp → Mine # 1; 1994-12-01 to 1995-05-16; source msha-controller-operator-history
- **controller_controls_operator:** Joby  Fields → Black Diamond Coal Corp; 1994-12-01 to 1995-05-16; source msha-controller-operator-history
- **operator_operates_mine:** Pegs Branch Energy Mining Co. → Mine # 1; 1995-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Mine # 1; 1995-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Pegs Branch Energy Mining Co.; 1995-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Mine # 1; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Road Fork Development Company Inc; 2011-06-01 to 1994-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Mine # 1; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Road Fork Development Company Inc; 2016-07-26 to 1994-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → Mine # 1; 2018-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Road Fork Development Company Inc; 2018-11-09 to 1994-11-30; source msha-controller-operator-history