# Relationship history for MSHA mine 4607732

Current hierarchy: **Loyal G  Forman Jr → Jcb Mining Inc → Sarah**

- 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:** FSS Coal Holding Inc → Sarah; 1985-10-18 to 1992-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Kingwood Mining Company → Sarah; 1989-02-01 to 1992-01-14; source msha-controller-operator-history
- **controller_controls_operator:** FSS Coal Holding Inc → Kingwood Mining Company; 1989-02-01 to 1992-01-14; source msha-controller-operator-history
- **controller_controls_mine:** Loyal G  Forman Jr → Sarah; 1989-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jcb Mining Inc → Sarah; 1992-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Loyal G  Forman Jr → Jcb Mining Inc; 1992-01-15 to current/open; source msha-controller-operator-history