# Relationship history for MSHA mine 4405322

Current hierarchy: **Yeary William → Little Y Coal Company Inc → #1 Strip**

- 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:** Little S Coal Corp → #1 Strip; 1979-11-01 to 1980-01-10; source msha-controller-operator-history
- **controller_controls_mine:** Strouth Kyle → #1 Strip; 1979-11-01 to 1980-01-10; source msha-controller-operator-history
- **controller_controls_operator:** Strouth Kyle → Little S Coal Corp; 1979-11-01 to 1980-01-10; source msha-controller-operator-history
- **operator_operates_mine:** Little Y Coal Company Inc → #1 Strip; 1980-01-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Yeary William → #1 Strip; 1980-01-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Yeary William → Little Y Coal Company Inc; 1980-01-11 to current/open; source msha-controller-operator-history