# Relationship history for MSHA mine 4608092

Current hierarchy: **Hatfield Wade Jr & Michael Mangus → 52 Leasing Inc → No 1**

- 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:** Richard T  Hatfield et al → No 1; 1990-07-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** P-F Mining Inc → No 1; 1991-09-01 to 1992-03-22; source msha-controller-operator-history
- **controller_controls_operator:** Richard T  Hatfield et al → P-F Mining Inc; 1991-09-01 to 1992-03-22; source msha-controller-operator-history
- **controller_controls_operator:** James E  Hatfield et al → P-F Mining Inc; 1991-09-01 to 1992-03-22; source msha-controller-operator-history
- **operator_operates_mine:** 52 Leasing Inc → No 1; 1992-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hatfield Wade Jr & Michael Mangus → No 1; 1992-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hatfield Wade Jr & Michael Mangus → 52 Leasing Inc; 1992-03-23 to current/open; source msha-controller-operator-history