# Relationship history for MSHA mine 0101572

Current hierarchy: **Blanton J C & Gene → B & B Construction Company Inc → Hargett 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

- **controller_controls_mine:** Blanton J C & Gene → Hargett Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & C Gravel Company → Hargett Pit; 1950-01-01 to 1978-04-04; source msha-controller-operator-history
- **controller_controls_mine:** C & C Gravel Company → Hargett Pit; 1950-01-01 to 1978-04-04; source msha-controller-operator-history
- **controller_controls_operator:** C & C Gravel Company → C & C Gravel Company; 1950-01-01 to 1978-04-04; source msha-controller-operator-history
- **operator_operates_mine:** B & B Construction Company Inc → Hargett Pit; 1978-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blanton J C & Gene → B & B Construction Company Inc; 1978-04-05 to current/open; source msha-controller-operator-history