# Relationship history for MSHA mine 1513872

Current hierarchy: **Mc Gowen Michael & Gary → Mc Gowen Resources → No 1**

- 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:** Branum & Branum Coal Company → No 1; 1982-12-01 to 1984-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Branum E J & Arthur Curtis → No 1; 1982-12-01 to 1984-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Branum E J & Arthur Curtis → Branum & Branum Coal Company; 1982-12-01 to 1984-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Mc Gowen Resources → No 1; 1984-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Gowen Michael & Gary → No 1; 1984-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Gowen Michael & Gary → Mc Gowen Resources; 1984-06-04 to current/open; source msha-controller-operator-history