# Relationship history for MSHA mine 4608533

Current hierarchy: **William E  Konya; Steve A  Konya → Konya Enterprises Inc → Berryburg 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

- **operator_operates_mine:** Tygart Valley Mining Inc → Berryburg Mine; 1995-10-01 to 1998-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Morgan → Berryburg Mine; 1995-10-01 to 1998-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Morgan → Tygart Valley Mining Inc; 1995-10-01 to 1998-09-01; source msha-controller-operator-history
- **operator_operates_mine:** Konya Enterprises Inc → Berryburg Mine; 1998-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William E  Konya et al → Berryburg Mine; 1998-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William E  Konya et al → Konya Enterprises Inc; 1998-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve A  Konya et al → Konya Enterprises Inc; 1998-09-02 to current/open; source msha-controller-operator-history