# Relationship history for MSHA mine 4608082

Current hierarchy: **Seabolt Gregory L → Coal Technology Inc → Hickorylick No 10-C 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:** Randy W  Burke → Hickorylick No 10-C Mine; 1989-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tanglewood Energy Inc → Hickorylick No 10-C Mine; 1991-08-01 to 1993-08-01; source msha-controller-operator-history
- **controller_controls_operator:** Randy W  Burke → Tanglewood Energy Inc; 1991-08-01 to 1993-08-01; source msha-controller-operator-history
- **operator_operates_mine:** Coal Technology Inc → Hickorylick No 10-C Mine; 1993-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Seabolt Gregory L → Hickorylick No 10-C Mine; 1993-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Seabolt Gregory L → Coal Technology Inc; 1993-08-02 to current/open; source msha-controller-operator-history