# Relationship history for MSHA mine 1517700

Current hierarchy: **John  Harris → Prater Creek Coal Corp → 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:** Clintco Enterprises Inc → No 1; 1995-08-01 to 1996-11-19; source msha-controller-operator-history
- **controller_controls_mine:** Bartley Clinton → No 1; 1995-08-01 to 1996-11-19; source msha-controller-operator-history
- **controller_controls_operator:** Bartley Clinton → Clintco Enterprises Inc; 1995-08-01 to 1996-11-19; source msha-controller-operator-history
- **operator_operates_mine:** Prater Creek Coal Corp → No 1; 1996-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Harris → No 1; 1996-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Harris → Prater Creek Coal Corp; 1996-11-20 to current/open; source msha-controller-operator-history