# Relationship history for MSHA mine 2102476

Current hierarchy: **Richard C  Lundin → Lundin Construction Company Inc → Lundin Quarry Fretham Location**

- 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:** Richard C  Lundin  et al → Lundin Quarry Fretham Location; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fretham Enterprises → Lundin Quarry Fretham Location; 1950-01-01 to 1986-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Fretham Ellsworth → Lundin Quarry Fretham Location; 1950-01-01 to 1986-10-08; source msha-controller-operator-history
- **controller_controls_operator:** Fretham Ellsworth → Fretham Enterprises; 1950-01-01 to 1986-10-08; source msha-controller-operator-history
- **operator_operates_mine:** Lundin Construction Company Inc → Lundin Quarry Fretham Location; 1986-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard C  Lundin  et al → Lundin Construction Company Inc; 1986-10-09 to current/open; source msha-controller-operator-history