# Relationship history for MSHA mine 0901145

Current hierarchy: **Larry R  Bell → Bell Stone Co → Bell Stone Co**

- 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:** Vengeance Creek Stone, Inc. → Bell Stone Co; 2002-04-11 to 2004-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert L  Garland Jr → Bell Stone Co; 2002-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Garland Jr → Vengeance Creek Stone, Inc.; 2002-04-11 to 2004-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Larry R  Bell → Bell Stone Co; 2003-08-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bell Stone Co → Bell Stone Co; 2004-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry R  Bell → Bell Stone Co; 2004-11-01 to current/open; source msha-controller-operator-history