# Relationship history for MSHA mine 1518291

Current hierarchy: **Jill  Slone → Gun Hill Coal, Inc. → #4**

- 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:** Jill  Slone → #4; 1998-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rex Dean  Osborn → #4; 2000-05-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** N D O Coal Company Inc → #4; 2000-10-01 to 2001-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Rex Dean  Osborn → N D O Coal Company Inc; 2000-10-01 to 2001-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Danny D Mead → #4; 2001-07-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** N. D. O. Coal Company, Inc. → #4; 2001-10-16 to 2001-10-20; source msha-controller-operator-history
- **controller_controls_operator:** Danny D Mead → N. D. O. Coal Company, Inc.; 2001-10-16 to 2001-10-20; source msha-controller-operator-history
- **operator_operates_mine:** Gun Hill Coal, Inc. → #4; 2001-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jill  Slone → Gun Hill Coal, Inc.; 2001-10-21 to current/open; source msha-controller-operator-history