# Relationship history for MSHA mine 1514247

Current hierarchy: **Ronnie  Thacker; Freddy  Thacker → South Fork Energies Inc → No 1 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:** South Fork Energies Inc → No 1 Mine; 1983-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Freddy  Thacker et al → No 1 Mine; 1983-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Freddy  Thacker et al → South Fork Energies Inc; 1983-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronnie  Thacker et al → South Fork Energies Inc; 1983-10-01 to current/open; source msha-controller-operator-history