# Relationship history for MSHA mine 3607631

Current hierarchy: **Bowers Fredalene D → Seward Land & Development Inc → Sugar Run**

- 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

- **operator_operates_mine:** S D Bowers Inc → Sugar Run; 1984-10-01 to 1994-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Bowers Samuel D → Sugar Run; 1984-10-01 to 1994-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Bowers Samuel D → S D Bowers Inc; 1984-10-01 to 1994-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Seward Land & Development Inc → Sugar Run; 1994-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bowers Fredalene D → Sugar Run; 1994-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bowers Fredalene D → Seward Land & Development Inc; 1994-10-24 to current/open; source msha-controller-operator-history