# Relationship history for MSHA mine 2401669

Current hierarchy: **Prince Judy L → J L Prince Company → Prince 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

- **operator_operates_mine:** W M S Prospecting → Prince Mine #1; 1982-06-01 to 1984-08-14; source msha-controller-operator-history
- **controller_controls_mine:** W M S Prospecting → Prince Mine #1; 1982-06-01 to 1984-08-14; source msha-controller-operator-history
- **controller_controls_operator:** W M S Prospecting → W M S Prospecting; 1982-06-01 to 1984-08-14; source msha-controller-operator-history
- **operator_operates_mine:** J L Prince Company → Prince Mine #1; 1984-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Prince Judy L → Prince Mine #1; 1984-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Prince Judy L → J L Prince Company; 1984-08-15 to current/open; source msha-controller-operator-history