# Relationship history for MSHA mine 1514287

Current hierarchy: **Ron  Newberry → Sandy River Mining Company → 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

- **operator_operates_mine:** Fin Coal Company Inc → No 1; 1983-09-01 to 1984-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Lowe James → No 1; 1983-09-01 to 1984-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Lowe James → Fin Coal Company Inc; 1983-09-01 to 1984-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Finn Coal Company Inc → No 1; 1984-05-18 to 1985-01-14; source msha-controller-operator-history
- **controller_controls_mine:** Gibson Clarence Jr → No 1; 1984-05-18 to 1985-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Gibson Clarence Jr → Finn Coal Company Inc; 1984-05-18 to 1985-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Sandy River Mining Company → No 1; 1985-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ron  Newberry → No 1; 1985-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ron  Newberry → Sandy River Mining Company; 1985-01-15 to current/open; source msha-controller-operator-history