# Relationship history for MSHA mine 1511261

Current hierarchy: **Little Clent → Clent Coal Corp → 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:** N & N Coal Corp → No 1; 1978-05-01 to 1978-10-02; source msha-controller-operator-history
- **controller_controls_mine:** Newsom Douglas → No 1; 1978-05-01 to 1978-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Newsom Douglas → N & N Coal Corp; 1978-05-01 to 1978-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Triple M Coal Company → No 1; 1978-10-03 to 1984-05-29; source msha-controller-operator-history
- **controller_controls_mine:** Miller James E & Eddie L--Earl Murphy → No 1; 1978-10-03 to 1984-05-29; source msha-controller-operator-history
- **controller_controls_operator:** Miller James E & Eddie L--Earl Murphy → Triple M Coal Company; 1978-10-03 to 1984-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Clent Coal Corp → No 1; 1984-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Little Clent → No 1; 1984-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Little Clent → Clent Coal Corp; 1984-05-30 to current/open; source msha-controller-operator-history