# Relationship history for MSHA mine 2200547

Current hierarchy: **Rodney  Grogan; Huey P Stockstill Jr. → Huey P Stockstill LLC → Twelve Oaks Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Richard  Stockstill  et al → Twelve Oaks Pit; 1979-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Huey Stockstill, Inc → Twelve Oaks Pit; 1983-01-01 to 2015-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Stockstill  et al → Huey Stockstill, Inc; 1983-01-01 to 2015-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Huey  Stockstill  et al → Huey Stockstill, Inc; 1983-01-01 to 2015-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Huey P Stockstill LLC → Twelve Oaks Pit; 2015-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rodney  Grogan et al → Twelve Oaks Pit; 2015-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Grogan et al → Huey P Stockstill LLC; 2015-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Huey P Stockstill Jr. et al → Huey P Stockstill LLC; 2015-08-28 to current/open; source msha-controller-operator-history