# Relationship history for MSHA mine 1515362

Current hierarchy: **Charles E  Yates → G & Y Coal Company Inc → G&Y #6**

- 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:** Charles E  Yates → G&Y #6; 1978-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Coal Ridge Fuels Of Hazard Inc → G&Y #6; 1983-12-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** River Processing Inc → G&Y #6; 1985-09-01 to 1987-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Coal Ridge Fuels Of Hazard Inc → River Processing Inc; 1985-09-01 to 1987-02-25; source msha-controller-operator-history
- **operator_operates_mine:** G & Y Coal Company Inc → G&Y #6; 1987-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles E  Yates → G & Y Coal Company Inc; 1987-02-26 to current/open; source msha-controller-operator-history