# Relationship history for MSHA mine 4405815

Current hierarchy: **Alpha Natural Resources, Inc. → Guest Mountain Mining Corporation → Mine No 4**

- 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

- **operator_operates_mine:** Double M No 2 Mine Inc → Mine No 4; 1981-12-01 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Clyde A  Mullins → Mine No 4; 1981-12-01 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Clyde A  Mullins → Double M No 2 Mine Inc; 1981-12-01 to 1999-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Cumberland Resources Corporation → Mine No 4; 1993-03-01 to 2010-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Appalachia Coal Company Inc → Mine No 4; 1999-12-01 to 2007-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Harold  Sturgill → Mine No 4; 1999-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harold  Sturgill → Appalachia Coal Company Inc; 1999-12-01 to 2007-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Guest Mountain Mining Corporation → Mine No 4; 2007-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cumberland Resources Corporation → Guest Mountain Mining Corporation; 2007-05-18 to 2010-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Mine No 4; 2010-04-19 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Guest Mountain Mining Corporation; 2010-04-19 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Mine No 4; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Guest Mountain Mining Corporation; 2011-06-01 to current/open; source msha-controller-operator-history