# Relationship history for MSHA mine 0301492

Current hierarchy: **Goins David → Goins Excavating → Goins Gravel Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Mike Tedder → Goins Gravel Pit; 1980-05-01 to 1984-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Tedder Mike → Goins Gravel Pit; 1980-05-01 to 1984-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Tedder Mike → Mike Tedder; 1980-05-01 to 1984-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Goins Excavating → Goins Gravel Pit; 1984-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Goins David → Goins Gravel Pit; 1984-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Goins David → Goins Excavating; 1984-06-07 to current/open; source msha-controller-operator-history