# Relationship history for MSHA mine 3101153

Current hierarchy: **Barnhill Contracting Company → Barnhill Contracting Company → Bunting 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:** Barrus Construction Co. Div. of Apac-Carolina, Inc → Bunting Pit; 1950-01-01 to 2003-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc → Bunting Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Barrus Construction Co. Div. of Apac-Carolina, Inc; 1950-01-01 to 2003-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Barnhill Contracting Company → Bunting Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc → Bunting Pit; 2003-04-01 to 2006-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Apac-Atlantic Inc Coastal Carolina Division → Bunting Pit; 2003-08-19 to 2006-10-22; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Apac-Atlantic Inc Coastal Carolina Division; 2003-08-19 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Bunting Pit; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Apac-Atlantic Inc Coastal Carolina Division; 2006-08-28 to 2006-10-22; source msha-controller-operator-history
- **operator_operates_mine:** Barnhill Contracting Company → Bunting Pit; 2006-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barnhill Contracting Company → Barnhill Contracting Company; 2006-10-23 to current/open; source msha-controller-operator-history