# Relationship history for MSHA mine 4605471

Current hierarchy: **Mc Call-John Coal Company Inc → Fork Lick Coal Processors Inc → Beaver Run 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Winkelman Dwight W → Beaver Run No 2 Mine; 1974-07-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Craig Contractors Inc → Beaver Run No 2 Mine; 1977-04-01 to 1980-05-13; source msha-controller-operator-history
- **controller_controls_operator:** Winkelman Dwight W → Craig Contractors Inc; 1977-04-01 to 1980-05-13; source msha-controller-operator-history
- **operator_operates_mine:** Jackson Hole Mining Inc → Beaver Run No 2 Mine; 1980-05-14 to 1985-06-13; source msha-controller-operator-history
- **controller_controls_mine:** Keatley Hugh → Beaver Run No 2 Mine; 1980-05-14 to 1985-06-13; source msha-controller-operator-history
- **controller_controls_operator:** Keatley Hugh → Jackson Hole Mining Inc; 1980-05-14 to 1985-06-13; source msha-controller-operator-history
- **controller_controls_mine:** Fazenbaker Paul F Sr → Beaver Run No 2 Mine; 1983-08-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fork Lick Coal Processors Inc → Beaver Run No 2 Mine; 1985-06-14 to 1987-09-13; source msha-controller-operator-history
- **controller_controls_operator:** Fazenbaker Paul F Sr → Fork Lick Coal Processors Inc; 1985-06-14 to 1987-09-13; source msha-controller-operator-history
- **controller_controls_mine:** Mc Call-John Coal Company Inc → Beaver Run No 2 Mine; 1987-09-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fork Lick Coal Processors Inc → Beaver Run No 2 Mine; 1987-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Call-John Coal Company Inc → Fork Lick Coal Processors Inc; 1987-09-14 to current/open; source msha-controller-operator-history