# Relationship history for MSHA mine 1202099

Current hierarchy: **James O  Ballenger → Ballenger Gravel → BALLENGER GRAVEL**

- 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:** Ballenger Gravel → BALLENGER GRAVEL; 1991-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James O  Ballenger → BALLENGER GRAVEL; 1991-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James O  Ballenger → Ballenger Gravel; 1991-04-01 to current/open; source msha-controller-operator-history