# Relationship history for MSHA mine 1517316

Current hierarchy: **Cliff  Bartley → Cliffco Enterprise Inc → No 3**

- 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:** Horton Steve → No 3; 1983-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cliff  Bartley → No 3; 1991-04-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ramblin Coal Company Inc → No 3; 1992-10-01 to 1994-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Horton Steve → Ramblin Coal Company Inc; 1992-10-01 to 1994-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Cliffco Enterprise Inc → No 3; 1994-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cliff  Bartley → Cliffco Enterprise Inc; 1994-07-26 to current/open; source msha-controller-operator-history