# Relationship history for MSHA mine 4609180

Current hierarchy: **Brandy M  Horvath → The New West Virginia Mining Company → Apache 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:** Michael D  Poskas → Apache Mine; 1992-10-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Postar Coal Company, Inc. → Apache Mine; 2006-08-28 to 2007-05-20; source msha-controller-operator-history
- **controller_controls_operator:** Michael D  Poskas → Postar Coal Company, Inc.; 2006-08-28 to 2007-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Hardrock Coal Company, Inc. → Apache Mine; 2007-05-21 to 2008-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Michael R  Shelton → Apache Mine; 2007-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael R  Shelton → Hardrock Coal Company, Inc.; 2007-05-21 to 2008-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Brandy M  Horvath → Apache Mine; 2008-01-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** The New West Virginia Mining Company → Apache Mine; 2008-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brandy M  Horvath → The New West Virginia Mining Company; 2008-08-28 to current/open; source msha-controller-operator-history