# Relationship history for MSHA mine 3603138

Current hierarchy: **Heidelberg Materials AG → Highway Materials Inc → Temple 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:** Berks Silica Sand Corp → Temple Quarry; 1950-01-01 to 1984-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Smith Land & Improvement Corp → Temple Quarry; 1950-01-01 to 1984-03-19; source msha-controller-operator-history
- **controller_controls_operator:** Smith Land & Improvement Corp → Berks Silica Sand Corp; 1950-01-01 to 1984-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Peter DePaul Irrevocable Combined Trust → Temple Quarry; 1950-01-01 to 2024-07-31; source msha-controller-operator-history
- **operator_operates_mine:** A & J Aggregates Inc → Temple Quarry; 1984-03-20 to 1989-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Richard E  Jordan II → Temple Quarry; 1984-03-20 to 1989-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Richard E  Jordan II → A & J Aggregates Inc; 1984-03-20 to 1989-02-12; source msha-controller-operator-history
- **operator_operates_mine:** Temple Crushed Stone Inc → Temple Quarry; 1989-02-13 to 1998-11-01; source msha-controller-operator-history
- **controller_controls_mine:** A E Stone Inc → Temple Quarry; 1989-02-13 to 1998-11-01; source msha-controller-operator-history
- **controller_controls_operator:** A E Stone Inc → Temple Crushed Stone Inc; 1989-02-13 to 1998-11-01; source msha-controller-operator-history
- **operator_operates_mine:** Highway Materials Inc → Temple Quarry; 1998-11-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter DePaul Irrevocable Combined Trust → Highway Materials Inc; 1998-11-02 to 2024-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Temple Quarry; 2024-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Highway Materials Inc; 2024-08-01 to current/open; source msha-controller-operator-history