# Relationship history for MSHA mine 4502688

Current hierarchy: **Jonathan G  Shotwell → Jonathan Shotwell Corp → Mine #1**

- 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

- **controller_controls_mine:** Lillian M  Shotwell → Mine #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J D Shotwell Company → Mine #1; 1979-01-01 to 1993-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Lillian M  Shotwell → J D Shotwell Company; 1979-01-01 to 1993-03-01; source msha-controller-operator-history
- **operator_operates_mine:** Jonathan Shotwell Corp → Mine #1; 1993-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jonathan G  Shotwell → Mine #1; 1993-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan G  Shotwell → Jonathan Shotwell Corp; 1993-03-02 to current/open; source msha-controller-operator-history