# Relationship history for MSHA mine 0103005

Current hierarchy: **Glenn L  Bradford → Bradford Gravel Company → Rabbit Creek 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Henson Sand & Gravel Inc → Rabbit Creek Pit; 1994-01-01 to 1994-03-09; source msha-controller-operator-history
- **controller_controls_mine:** John D  Henson → Rabbit Creek Pit; 1994-01-01 to 1994-03-09; source msha-controller-operator-history
- **controller_controls_operator:** John D  Henson → Henson Sand & Gravel Inc; 1994-01-01 to 1994-03-09; source msha-controller-operator-history
- **operator_operates_mine:** Waterways Material Co. → Rabbit Creek Pit; 1994-03-10 to 2005-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Tim  Parker → Rabbit Creek Pit; 1994-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Parker → Waterways Material Co.; 1994-03-10 to 2005-05-22; source msha-controller-operator-history
- **operator_operates_mine:** Triangle Aggregates, Inc. → Rabbit Creek Pit; 2005-05-23 to 2013-03-26; source msha-controller-operator-history
- **controller_controls_mine:** William B  Chinnis → Rabbit Creek Pit; 2005-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William B  Chinnis → Triangle Aggregates, Inc.; 2005-05-23 to 2013-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Bradford Gravel Company → Rabbit Creek Pit; 2013-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Glenn L  Bradford → Rabbit Creek Pit; 2013-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Glenn L  Bradford → Bradford Gravel Company; 2013-03-27 to current/open; source msha-controller-operator-history