# Relationship history for MSHA mine 1518104

Current hierarchy: **Progress Energy Inc → Diamond May Mining Inc → Young'S Fork**

- 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:** Florida Progress Corporation → Young'S Fork; 1995-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Diamond May Mining Company → Young'S Fork; 1998-09-01 to 2000-11-29; source msha-controller-operator-history
- **controller_controls_operator:** Florida Progress Corporation → Diamond May Mining Company; 1998-09-01 to 2000-11-29; source msha-controller-operator-history
- **operator_operates_mine:** Diamond May Mining Inc → Young'S Fork; 2000-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Progress Energy Inc → Young'S Fork; 2000-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Progress Energy Inc → Diamond May Mining Inc; 2000-11-30 to current/open; source msha-controller-operator-history