# Relationship history for MSHA mine 4404312

Current hierarchy: **Davies Bill → Nu Coal Corp → 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** James C  Ball → No 3 Mine; 1975-09-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Peggy-O Coal Company Inc → No 3 Mine; 1976-05-03 to 1978-02-02; source msha-controller-operator-history
- **controller_controls_operator:** James C  Ball → Peggy-O Coal Company Inc; 1976-05-03 to 1978-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Kristen Koal Kompany → No 3 Mine; 1978-02-03 to 1979-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Crouse Donald → No 3 Mine; 1978-02-03 to 1985-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Crouse Donald → Kristen Koal Kompany; 1978-02-03 to 1979-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Rash Russell → No 3 Mine; 1978-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nu Coal Corp → No 3 Mine; 1979-11-13 to 1980-09-03; source msha-controller-operator-history
- **controller_controls_operator:** Rash Russell → Nu Coal Corp; 1979-11-13 to 1980-09-03; source msha-controller-operator-history
- **operator_operates_mine:** Nu Coal Corp → No 3 Mine; 1980-09-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Davies Bill → No 3 Mine; 1980-09-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Davies Bill → Nu Coal Corp; 1980-09-04 to current/open; source msha-controller-operator-history