# Relationship history for MSHA mine 1514641

Current hierarchy: **Mc Gowen Michael & Gary → Mc Gowen Resources → 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:** Hill Zelma → No 3; 1984-02-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shevon Coal Inc → No 3; 1984-05-01 to 1985-08-20; source msha-controller-operator-history
- **controller_controls_operator:** Hill Zelma → Shevon Coal Inc; 1984-05-01 to 1985-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Mc Gowen Michael & Gary → No 3; 1984-06-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rebecca Coal Company → No 3; 1985-08-21 to 1985-12-09; source msha-controller-operator-history
- **controller_controls_mine:** Smith Roger--Don Bingham Et Al → No 3; 1985-08-21 to 1985-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Smith Roger--Don Bingham Et Al → Rebecca Coal Company; 1985-08-21 to 1985-12-09; source msha-controller-operator-history
- **operator_operates_mine:** Paula Matt Coal Company → No 3; 1985-12-10 to 1986-05-01; source msha-controller-operator-history
- **controller_controls_mine:** Claxton James Et Al → No 3; 1985-12-10 to 1986-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Claxton James Et Al → Paula Matt Coal Company; 1985-12-10 to 1986-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Mc Gowen Resources → No 3; 1986-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Gowen Michael & Gary → Mc Gowen Resources; 1986-05-02 to current/open; source msha-controller-operator-history