# Relationship history for MSHA mine 1513739

Current hierarchy: **Turner J Preston → Gauley River Resources Inc → No 3 Surface 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

- **controller_controls_mine:** Turner J Preston → No 3 Surface Mine; 1981-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Colvin & Davidson Coal Company → No 3 Surface Mine; 1982-09-01 to 1983-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Colvin Bill & Scott Davidson → No 3 Surface Mine; 1982-09-01 to 1983-05-02; source msha-controller-operator-history
- **controller_controls_operator:** Colvin Bill & Scott Davidson → Colvin & Davidson Coal Company; 1982-09-01 to 1983-05-02; source msha-controller-operator-history
- **operator_operates_mine:** Gauley River Resources Inc → No 3 Surface Mine; 1983-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Turner J Preston → Gauley River Resources Inc; 1983-05-03 to current/open; source msha-controller-operator-history