# Relationship history for MSHA mine 1517922

Current hierarchy: **Terry  Moore → Big Branch Mining Inc → 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

- **controller_controls_mine:** Eddie  Holbrooks → No 4; 1989-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Moore → No 4; 1993-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Husky Coal Company Inc → No 4; 1997-04-01 to 2000-10-18; source msha-controller-operator-history
- **controller_controls_operator:** Eddie  Holbrooks → Husky Coal Company Inc; 1997-04-01 to 2000-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Donn A  Chickering → No 4; 1997-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Branham & Baker Underground Corp → No 4; 2000-10-19 to 2001-08-01; source msha-controller-operator-history
- **controller_controls_operator:** Donn A  Chickering → Branham & Baker Underground Corp; 2000-10-19 to 2001-08-01; source msha-controller-operator-history
- **operator_operates_mine:** Big Branch Mining Inc → No 4; 2001-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Moore → Big Branch Mining Inc; 2001-08-02 to current/open; source msha-controller-operator-history