# Relationship history for MSHA mine 3609952

Current hierarchy: **Terrance C  Shallenberger → Fayette Coal & Coke Inc → Kovach Site**

- 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:** Terrance C  Shallenberger → Kovach Site; 2007-02-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fayette Coal & Coke Inc → Kovach Site; 2011-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terrance C  Shallenberger → Fayette Coal & Coke Inc; 2011-08-24 to current/open; source msha-controller-operator-history