# Relationship history for MSHA mine 1517530

Current hierarchy: **Manning Kenneth Don → Manning Coal Corp → Mine No 3**

- 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:** Manning Kenneth Don → Mine No 3; 1981-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Mine No 3; 1986-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Addwest Mining Inc → Mine No 3; 1994-04-01 to 1995-02-02; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Addwest Mining Inc; 1994-04-01 to 1995-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Manning Coal Corp → Mine No 3; 1995-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Manning Kenneth Don → Manning Coal Corp; 1995-02-03 to current/open; source msha-controller-operator-history