# Relationship history for MSHA mine 1517656

Current hierarchy: **Hall Terry R → Little Buck Coal Inc → No 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:** Timmy  Ratliff et al → No 1; 1990-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James H  Booth et al → No 1; 1992-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chenoa Coal Inc → No 1; 1995-04-01 to 1995-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Timmy  Ratliff et al → Chenoa Coal Inc; 1995-04-01 to 1995-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Dennis  Ratliff et al → Chenoa Coal Inc; 1995-04-01 to 1995-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Taurus Coal Company Inc → No 1; 1995-08-11 to 1995-12-14; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Taurus Coal Company Inc; 1995-08-11 to 1995-12-14; source msha-controller-operator-history
- **operator_operates_mine:** Little Buck Coal Inc → No 1; 1995-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hall Terry R → No 1; 1995-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hall Terry R → Little Buck Coal Inc; 1995-12-15 to current/open; source msha-controller-operator-history