# Relationship history for MSHA mine 1517373

Current hierarchy: **Robert C  Ratliff → Cody Mining Company Inc → #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

- **operator_operates_mine:** Hood'S Fork Mining Inc → #1; 1993-03-01 to 1997-06-02; source msha-controller-operator-history
- **controller_controls_mine:** Monroe  Jones → #1; 1993-03-01 to 1997-06-02; source msha-controller-operator-history
- **controller_controls_operator:** Monroe  Jones → Hood'S Fork Mining Inc; 1993-03-01 to 1997-06-02; source msha-controller-operator-history
- **operator_operates_mine:** Cody Mining Company Inc → #1; 1997-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert C  Ratliff → #1; 1997-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert C  Ratliff → Cody Mining Company Inc; 1997-06-03 to current/open; source msha-controller-operator-history