# Relationship history for MSHA mine 4401244

Current hierarchy: **Brown Stanley → Donna Coal Company → Mine No 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:** Truel Brown Coal Company → Mine No 1; 1950-01-01 to 1972-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Brown Truel → Mine No 1; 1950-01-01 to 1972-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Brown Truel → Truel Brown Coal Company; 1950-01-01 to 1972-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Donna Coal Company → Mine No 1; 1972-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brown Stanley → Mine No 1; 1972-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brown Stanley → Donna Coal Company; 1972-03-01 to current/open; source msha-controller-operator-history