# Relationship history for MSHA mine 1518398

Current hierarchy: **Minerva Ruth  Mead → M R I Mining → 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:** Barbara A  Slone → No 3; 2000-11-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Windwalker Coal Inc → No 3; 2001-06-01 to 2002-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Barbara A  Slone → Windwalker Coal Inc; 2001-06-01 to 2002-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Danny D Mead → No 3; 2001-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Benjamin  Hampton → No 3; 2001-10-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** N D O Coal Co., Inc. → No 3; 2002-05-20 to 2003-02-19; source msha-controller-operator-history
- **controller_controls_operator:** Danny D Mead → N D O Coal Co., Inc.; 2002-05-20 to 2003-02-19; source msha-controller-operator-history
- **controller_controls_mine:** Minerva Ruth  Mead → No 3; 2003-02-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Solid Rock Const., Inc. → No 3; 2003-02-20 to 2004-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin  Hampton → Solid Rock Const., Inc.; 2003-02-20 to 2004-04-04; source msha-controller-operator-history
- **operator_operates_mine:** M R I Mining → No 3; 2004-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Minerva Ruth  Mead → M R I Mining; 2004-04-05 to current/open; source msha-controller-operator-history