# Relationship history for MSHA mine 5001409

Current hierarchy: **Mc Intosh Richard → Mc Intosh Mining Company → Mc Intosh Placer**

- 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:** Mc Intosh Mining Company → Mc Intosh Placer; 1981-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Intosh Richard → Mc Intosh Placer; 1981-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Intosh Richard → Mc Intosh Mining Company; 1981-07-01 to current/open; source msha-controller-operator-history