# Relationship history for MSHA mine 1201841

Current hierarchy: **Rogers Group Inc → Rogers Group Inc → Owensburg 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** American Aggregates Corp → Owensburg Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rogers Group Inc → Owensburg Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Medina Enterprise Inc → Owensburg Quarry; 1981-05-01 to 1984-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Medina Thomas P → Owensburg Quarry; 1981-05-01 to 1984-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Medina Thomas P → Medina Enterprise Inc; 1981-05-01 to 1984-01-09; source msha-controller-operator-history
- **operator_operates_mine:** Owensburg Quarry Inc → Owensburg Quarry; 1984-01-10 to 1985-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Dillman Cary J → Owensburg Quarry; 1984-01-10 to 1985-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Dillman Cary J → Owensburg Quarry Inc; 1984-01-10 to 1985-07-30; source msha-controller-operator-history
- **operator_operates_mine:** Owensburg Quarry Inc → Owensburg Quarry; 1985-07-31 to 1985-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Carnahan Don & Paul D Myers → Owensburg Quarry; 1985-07-31 to 1985-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Carnahan Don & Paul D Myers → Owensburg Quarry Inc; 1985-07-31 to 1985-11-04; source msha-controller-operator-history
- **operator_operates_mine:** American Aggregates Corp → Owensburg Quarry; 1985-11-05 to 1987-02-28; source msha-controller-operator-history
- **controller_controls_operator:** American Aggregates Corp → American Aggregates Corp; 1985-11-05 to 1987-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Consolidated Gold Fields Limited → Owensburg Quarry; 1987-02-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** American Aggregates Corp → Owensburg Quarry; 1987-03-01 to 1989-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Consolidated Gold Fields Limited → American Aggregates Corp; 1987-03-01 to 1989-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Rogers Group Inc → Owensburg Quarry; 1989-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Group Inc → Rogers Group Inc; 1989-05-02 to current/open; source msha-controller-operator-history