# Relationship history for MSHA mine 4606652

Current hierarchy: **Frush James W Jr → Cottle Coal Company Inc → #1 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:** Furr Danny H → #1 Surface Mine; 1976-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hunt Lumber Company → #1 Surface Mine; 1983-05-01 to 1984-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Hunt William → #1 Surface Mine; 1983-05-01 to 1984-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Hunt William → Hunt Lumber Company; 1983-05-01 to 1984-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Copen Coal Company → #1 Surface Mine; 1984-03-08 to 1985-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Furr Danny H → Copen Coal Company; 1984-03-08 to 1985-06-11; source msha-controller-operator-history
- **operator_operates_mine:** Cottle Coal Company Inc → #1 Surface Mine; 1985-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Frush James W Jr → #1 Surface Mine; 1985-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frush James W Jr → Cottle Coal Company Inc; 1985-06-12 to current/open; source msha-controller-operator-history