# Relationship history for MSHA mine 0102773

Current hierarchy: **Dobbins Jerrell → Cedar Creek Mining Company Inc → Clarke 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:** Fortner James E → Clarke Mine; 1984-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** White Oak Mining Company Inc → Clarke Mine; 1988-08-01 to 1989-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Fortner James E → White Oak Mining Company Inc; 1988-08-01 to 1989-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Cedar Creek Mining Company Inc → Clarke Mine; 1989-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dobbins Jerrell → Clarke Mine; 1989-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dobbins Jerrell → Cedar Creek Mining Company Inc; 1989-05-15 to current/open; source msha-controller-operator-history