# Relationship history for MSHA mine 4608247

Current hierarchy: **Clarence R  Peters; Richard N  Nester → Laurel Coal Corp → Winifred Deep Mine**

- 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:** Ashland Inc et al → Winifred Deep Mine; 1987-05-19 to 2005-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Arch Of West Virginia → Winifred Deep Mine; 1992-12-01 to 2001-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc et al → Arch Of West Virginia; 1992-12-01 to 2001-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Clarence R  Peters et al → Winifred Deep Mine; 1998-09-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Laurel Coal Corp → Winifred Deep Mine; 2001-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clarence R  Peters et al → Laurel Coal Corp; 2001-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard N  Nester et al → Laurel Coal Corp; 2001-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Magnum Coal Company → Winifred Deep Mine; 2006-01-01 to 2008-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Magnum Coal Company → Arch Of West Virginia; 2006-01-01 to 2001-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Winifred Deep Mine; 2008-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Arch Of West Virginia; 2008-07-23 to 2001-03-21; source msha-controller-operator-history