# Relationship history for MSHA mine 4404214

Current hierarchy: **Bobby Gene  Yates → Triple Y 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Hi Jacker Coal Company Inc → No 3 Mine; 1975-11-12 to 1978-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Justice Carmel → No 3 Mine; 1975-11-12 to 1978-10-24; source msha-controller-operator-history
- **controller_controls_operator:** Justice Carmel → Hi Jacker Coal Company Inc; 1975-11-12 to 1978-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Bobby Gene  Yates → No 3 Mine; 1977-09-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Triple Y Coal Corp → No 3 Mine; 1978-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby Gene  Yates → Triple Y Coal Corp; 1978-10-25 to current/open; source msha-controller-operator-history