# Relationship history for MSHA mine 4000094

Current hierarchy: **Rogers Group Inc → Rogers Group, Inc. → Ten Mile 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:** Martin Marietta Materials Inc → Ten Mile Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rogers Group Inc → Ten Mile Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ten Mile Stone Company Inc → Ten Mile Quarry; 1950-01-01 to 2001-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Beverly C  Wood Jr → Ten Mile Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beverly C  Wood Jr → Ten Mile Stone Company Inc; 1950-01-01 to 2001-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Martin Marietta Aggregates → Ten Mile Quarry; 2001-02-01 to 2003-03-27; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Martin Marietta Aggregates; 2001-02-01 to 2003-03-27; source msha-controller-operator-history
- **operator_operates_mine:** Martin Marietta Materials → Ten Mile Quarry; 2003-03-28 to 2004-06-21; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Martin Marietta Materials; 2003-03-28 to 2004-06-21; source msha-controller-operator-history
- **operator_operates_mine:** Rogers Group, Inc. → Ten Mile Quarry; 2004-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Group Inc → Rogers Group, Inc.; 2004-06-22 to current/open; source msha-controller-operator-history