# Relationship history for MSHA mine 4103967

Current hierarchy: **County Of Bell → Bell County Road & Bridge → BELL COUNTY PITS**

- 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:** Bell County Road & Bridge → BELL COUNTY PITS; 1997-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** County Of Bell → BELL COUNTY PITS; 1997-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** County Of Bell → Bell County Road & Bridge; 1997-11-01 to current/open; source msha-controller-operator-history