# Relationship history for MSHA mine 3600129

Current hierarchy: **Heidelberg Materials AG → Heidelberg Materials Northeast LLC → Wrightsville Quarry**

- 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:** Klines Quarry Inc → Wrightsville Quarry; 1950-01-01 to 1979-06-30; source msha-controller-operator-history
- **controller_controls_mine:** H Edmond  Kline  et al → Wrightsville Quarry; 1950-01-01 to 1979-06-30; source msha-controller-operator-history
- **controller_controls_operator:** H Edmond  Kline  et al → Klines Quarry Inc; 1950-01-01 to 1979-06-30; source msha-controller-operator-history
- **operator_operates_mine:** County Line Quarry Inc → Wrightsville Quarry; 1979-07-01 to 1990-10-02; source msha-controller-operator-history
- **controller_controls_mine:** E B Abel Construction Company Inc → Wrightsville Quarry; 1979-07-01 to 1990-10-02; source msha-controller-operator-history
- **controller_controls_operator:** E B Abel Construction Company Inc → County Line Quarry Inc; 1979-07-01 to 1990-10-02; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Wrightsville Quarry; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **operator_operates_mine:** County Line Quarry Inc → Wrightsville Quarry; 1990-10-03 to 1996-12-15; source msha-controller-operator-history
- **controller_controls_mine:** H Edmond  Kline  et al → Wrightsville Quarry; 1990-10-03 to 1996-12-15; source msha-controller-operator-history
- **controller_controls_operator:** H Edmond  Kline  et al → County Line Quarry Inc; 1990-10-03 to 1996-12-15; source msha-controller-operator-history
- **operator_operates_mine:** County Line Quarry LLC → Wrightsville Quarry; 1996-12-16 to 2025-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Peter DePaul Irrevocable Combined Trust → Wrightsville Quarry; 1996-12-16 to 2024-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Peter DePaul Irrevocable Combined Trust → County Line Quarry LLC; 1996-12-16 to 2024-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Wrightsville Quarry; 2007-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Wrightsville Quarry; 2024-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → County Line Quarry LLC; 2024-08-01 to 2025-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Heidelberg Materials Northeast LLC → Wrightsville Quarry; 2025-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Heidelberg Materials Northeast LLC; 2025-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Heidelberg Materials Northeast LLC; 2025-05-01 to 2007-08-22; source msha-controller-operator-history