# Relationship history for MSHA mine 4405844

Current hierarchy: **Richardson Fred → Freddie Dean Coal Inc → No 2 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:** Hale Columbus → No 2 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stiltner Kermit Et Al → No 2 Mine; 1977-03-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Davis Contracting Inc → No 2 Mine; 1982-02-01 to 1983-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Hay Webster C → No 2 Mine; 1982-02-01 to 1983-01-16; source msha-controller-operator-history
- **controller_controls_operator:** Hay Webster C → Davis Contracting Inc; 1982-02-01 to 1983-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Rockdale Mining Company Inc → No 2 Mine; 1983-01-17 to 1983-06-27; source msha-controller-operator-history
- **controller_controls_operator:** Stiltner Kermit Et Al → Rockdale Mining Company Inc; 1983-01-17 to 1983-06-27; source msha-controller-operator-history
- **operator_operates_mine:** Three H Coal Company Inc → No 2 Mine; 1983-06-28 to 1984-12-16; source msha-controller-operator-history
- **controller_controls_operator:** Hale Columbus → Three H Coal Company Inc; 1983-06-28 to 1984-12-16; source msha-controller-operator-history
- **controller_controls_mine:** Richardson Fred → No 2 Mine; 1984-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dickenson Mining Company Inc → No 2 Mine; 1984-12-17 to 1986-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  Varney → No 2 Mine; 1984-12-17 to 1986-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Varney → Dickenson Mining Company Inc; 1984-12-17 to 1986-02-12; source msha-controller-operator-history
- **operator_operates_mine:** Freddie Dean Coal Inc → No 2 Mine; 1986-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richardson Fred → Freddie Dean Coal Inc; 1986-02-13 to current/open; source msha-controller-operator-history