# Relationship history for MSHA mine 4406268

Current hierarchy: **Stanley Darrell → Rebel Coals Inc → #1 Prep Plant**

- 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:** K M H Energy Corp → #1 Prep Plant; 1986-06-01 to 1997-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Stanley Kenneth D Et Al → #1 Prep Plant; 1986-06-01 to 1997-09-21; source msha-controller-operator-history
- **controller_controls_operator:** Stanley Kenneth D Et Al → K M H Energy Corp; 1986-06-01 to 1997-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Stanley Darrell → #1 Prep Plant; 1996-09-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rebel Coals Inc → #1 Prep Plant; 1997-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley Darrell → Rebel Coals Inc; 1997-09-22 to current/open; source msha-controller-operator-history