# Relationship history for MSHA mine 1518578

Current hierarchy: **Jimmie Leon  Hess → Brem Coal Co LLC → 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Kenneth L  Farley et al → No 1; 1995-05-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dry Fork Energy Inc → No 1; 2002-10-09 to 2005-05-10; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth L  Farley et al → Dry Fork Energy Inc; 2002-10-09 to 2005-05-10; source msha-controller-operator-history
- **operator_operates_mine:** Brem Coal Co LLC → No 1; 2005-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Elster  Mc Clanahan → No 1; 2005-05-11 to 2011-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Elster  Mc Clanahan → Brem Coal Co LLC; 2005-05-11 to 2011-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Jimmie Leon  Hess → No 1; 2011-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jimmie Leon  Hess → Brem Coal Co LLC; 2011-03-09 to current/open; source msha-controller-operator-history