# Relationship history for MSHA mine 4405468

Current hierarchy: **Stacy Adam M → Leslie M Coal Company → #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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Leslie M Coal Company → #1 Surface; 1980-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stacy Adam M → #1 Surface; 1980-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stacy Adam M → Leslie M Coal Company; 1980-07-01 to current/open; source msha-controller-operator-history