# Relationship history for MSHA mine 3602784

Current hierarchy: **Marmon Group Inc → James M Stott Coal Company Inc → Rush #2 Strip Mine & Preparation Pl**

- 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

- **operator_operates_mine:** James M Stott Coal Company Inc → Rush #2 Strip Mine & Preparation Pl; 1950-01-01 to 1976-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Stott James M → Rush #2 Strip Mine & Preparation Pl; 1950-01-01 to 1976-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Stott James M → James M Stott Coal Company Inc; 1950-01-01 to 1976-12-01; source msha-controller-operator-history
- **operator_operates_mine:** James M Stott Coal Company Inc → Rush #2 Strip Mine & Preparation Pl; 1976-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Marmon Group Inc → Rush #2 Strip Mine & Preparation Pl; 1976-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marmon Group Inc → James M Stott Coal Company Inc; 1976-12-02 to current/open; source msha-controller-operator-history