# Relationship history for MSHA mine 4600845

Current hierarchy: **Richard T  Hatfield; James E  Hatfield → Harless Coal Co → No 9 Ug**

- 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:** Harless Coal Co → No 9 Ug; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James E  Hatfield et al → No 9 Ug; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James E  Hatfield et al → Harless Coal Co; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard T  Hatfield et al → Harless Coal Co; 1950-01-01 to current/open; source msha-controller-operator-history