# Relationship history for MSHA mine 2902133

Current hierarchy: **Hiram T  Ward; A Judith  Ward → Ward Enterprises Inc → Hawkins Pit**

- 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:** Ward Enterprises Inc → Hawkins Pit; 1994-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hiram T  Ward et al → Hawkins Pit; 1994-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hiram T  Ward et al → Ward Enterprises Inc; 1994-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** A Judith  Ward et al → Ward Enterprises Inc; 1994-07-01 to current/open; source msha-controller-operator-history