# Relationship history for MSHA mine 1511938

Current hierarchy: **Malicote Leroy & Paul Ramsey → Malicote Coal Company → No 1 Surface**

- 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:** Malicote Coal Company → No 1 Surface; 1979-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Malicote Leroy & Paul Ramsey → No 1 Surface; 1979-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Malicote Leroy & Paul Ramsey → Malicote Coal Company; 1979-06-01 to current/open; source msha-controller-operator-history