# Relationship history for MSHA mine 4607499

Current hierarchy: **Bays David → Anna B Mining Inc → Poplar Lick Surface**

- 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:** Verno John R → Poplar Lick Surface; 1987-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** V M S Ltd → Poplar Lick Surface; 1988-04-01 to 1990-07-15; source msha-controller-operator-history
- **controller_controls_operator:** Verno John R → V M S Ltd; 1988-04-01 to 1990-07-15; source msha-controller-operator-history
- **controller_controls_mine:** Bays David → Poplar Lick Surface; 1988-09-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** V M S Ltd → Poplar Lick Surface; 1990-07-16 to 1990-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Van Horn Charles → Poplar Lick Surface; 1990-07-16 to 1990-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Van Horn Charles → V M S Ltd; 1990-07-16 to 1990-10-01; source msha-controller-operator-history
- **operator_operates_mine:** V M S Ltd → Poplar Lick Surface; 1990-10-02 to 1992-10-12; source msha-controller-operator-history
- **controller_controls_mine:** Michael C  Faykus → Poplar Lick Surface; 1990-10-02 to 1992-10-12; source msha-controller-operator-history
- **controller_controls_operator:** Michael C  Faykus → V M S Ltd; 1990-10-02 to 1992-10-12; source msha-controller-operator-history
- **operator_operates_mine:** Anna B Mining Inc → Poplar Lick Surface; 1992-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bays David → Anna B Mining Inc; 1992-10-13 to current/open; source msha-controller-operator-history