# Relationship history for MSHA mine 4607273

Current hierarchy: **Alpha Natural Resources Holdings, Inc → Independence Coal Company Inc → Justice #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

- **operator_operates_mine:** Birchfield Mining Inc → Justice #1; 1950-01-01 to 1989-11-09; source msha-controller-operator-history
- **controller_controls_mine:** Henry Paul  Kizer et al → Justice #1; 1950-01-01 to 1989-11-09; source msha-controller-operator-history
- **controller_controls_operator:** Henry Paul  Kizer et al → Birchfield Mining Inc; 1950-01-01 to 1989-11-09; source msha-controller-operator-history
- **operator_operates_mine:** Birchfield Mining Inc → Justice #1; 1989-11-10 to 1994-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Castle Rock Coal Corp → Justice #1; 1989-11-10 to 1994-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Castle Rock Coal Corp → Birchfield Mining Inc; 1989-11-10 to 1994-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Justice #1; 1991-12-01 to 2011-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Oasis Contracting Inc → Justice #1; 1994-07-07 to 1997-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Philip  Farley → Justice #1; 1994-07-07 to 1997-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Philip  Farley → Oasis Contracting Inc; 1994-07-07 to 1997-03-11; source msha-controller-operator-history
- **operator_operates_mine:** Independence Coal Company Inc → Justice #1; 1997-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Independence Coal Company Inc; 1997-03-12 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Justice #1; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Independence Coal Company Inc; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Justice #1; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Independence Coal Company Inc; 2016-07-26 to current/open; source msha-controller-operator-history