# Relationship history for MSHA mine 4000075

Current hierarchy: **Rogers Group Inc → Rogers Group Inc. → Whites Creek Plant & 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Martin Marietta Materials Inc → Whites Creek Plant & Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rogers Group Inc → Whites Creek Plant & Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Menefee Crushed Stone Company Inc → Whites Creek Plant & Quarry; 1950-01-01 to 1999-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Albert L  Menefee Jr → Whites Creek Plant & Quarry; 1950-01-01 to 1999-09-20; source msha-controller-operator-history
- **controller_controls_operator:** Albert L  Menefee Jr → Menefee Crushed Stone Company Inc; 1950-01-01 to 1999-09-20; source msha-controller-operator-history
- **operator_operates_mine:** Martin Marietta Materials Incorporated → Whites Creek Plant & Quarry; 1999-09-21 to 2004-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Martin Marietta Materials Incorporated; 1999-09-21 to 2004-07-07; source msha-controller-operator-history
- **operator_operates_mine:** Rogers Group Inc. → Whites Creek Plant & Quarry; 2004-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Group Inc → Rogers Group Inc.; 2004-07-08 to current/open; source msha-controller-operator-history