# Relationship history for MSHA mine 1511775

Current hierarchy: **Daris  Stump → Stump Coal Company Inc → No 5 (D)**

- 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:** Daris  Stump → No 5 (D); 1974-07-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stump Coal Company Inc → No 5 (D); 1979-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daris  Stump → Stump Coal Company Inc; 1979-02-01 to current/open; source msha-controller-operator-history