# Relationship history for MSHA mine 1517058

Current hierarchy: **Manning Kenneth Don → Manning Coal Corp → 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

- **controller_controls_mine:** Cooper William L → Mine No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Manning Kenneth Don → Mine No 1; 1981-01-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Leemike Coal Company Inc → Mine No 1; 1991-04-01 to 1994-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Cooper William L → Leemike Coal Company Inc; 1991-04-01 to 1994-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Manning Coal Corp → Mine No 1; 1994-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Manning Kenneth Don → Manning Coal Corp; 1994-07-01 to current/open; source msha-controller-operator-history