# Relationship history for MSHA mine 4404844

Current hierarchy: **Pruitt Danny E → Black Hawk Coal Company Inc → No 3 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:** Mc Clanahan Elmer → No 3 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pruitt Danny E → No 3 Mine; 1975-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & M Coal Company → No 3 Mine; 1977-08-01 to 1978-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clanahan Elmer → J & M Coal Company; 1977-08-01 to 1978-07-10; source msha-controller-operator-history
- **operator_operates_mine:** R & T Coal Company → No 3 Mine; 1978-07-11 to 1978-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Thompson James R → No 3 Mine; 1978-07-11 to 1978-11-20; source msha-controller-operator-history
- **controller_controls_operator:** Thompson James R → R & T Coal Company; 1978-07-11 to 1978-11-20; source msha-controller-operator-history
- **operator_operates_mine:** Black Hawk Coal Company Inc → No 3 Mine; 1978-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pruitt Danny E → Black Hawk Coal Company Inc; 1978-11-21 to current/open; source msha-controller-operator-history