# Relationship history for MSHA mine 1509929

Current hierarchy: **Charles E  Yates → Atlas Mining Company Inc → #1**

- 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:** Maggard Clarence → #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles E  Yates → #1; 1976-04-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Clarence Maggard Coal Company Inc → #1; 1976-09-03 to 1982-04-18; source msha-controller-operator-history
- **controller_controls_operator:** Maggard Clarence → Clarence Maggard Coal Company Inc; 1976-09-03 to 1982-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Atlas Mining Company Inc → #1; 1982-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles E  Yates → Atlas Mining Company Inc; 1982-04-19 to current/open; source msha-controller-operator-history