# Relationship history for MSHA mine 4601505

Current hierarchy: **Mauss Egon → Kenley Mining Company → Hunter 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Smith & Stover Coal Company → Hunter Mine; 1950-01-01 to 1979-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Smith K W → Hunter Mine; 1950-01-01 to 1979-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Smith K W → Smith & Stover Coal Company; 1950-01-01 to 1979-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Kenley Mining Company → Hunter Mine; 1979-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mauss Egon → Hunter Mine; 1979-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mauss Egon → Kenley Mining Company; 1979-11-15 to current/open; source msha-controller-operator-history