# Relationship history for MSHA mine 4406083

Current hierarchy: **Stacy Monroe → D D & M Mining Inc → No 7**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Charles Warren → No 7; 1980-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D D & M Mining Inc → No 7; 1984-04-01 to 1984-06-26; source msha-controller-operator-history
- **controller_controls_operator:** Charles Warren → D D & M Mining Inc; 1984-04-01 to 1984-06-26; source msha-controller-operator-history
- **operator_operates_mine:** D D & M Mining Inc → No 7; 1984-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stacy Monroe → No 7; 1984-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stacy Monroe → D D & M Mining Inc; 1984-06-27 to current/open; source msha-controller-operator-history