# Relationship history for MSHA mine 4002577

Current hierarchy: **United Minerals → Cumberland Coal Processors Ltd → Daysville Tipple**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Mountain Creek Minerals & Tennessee Resources Deve → Daysville Tipple; 1979-04-25 to 1983-09-08; source msha-controller-operator-history
- **operator_operates_mine:** United Minerals → Daysville Tipple; 1979-12-01 to 1983-01-25; source msha-controller-operator-history
- **controller_controls_operator:** Mountain Creek Minerals & Tennessee Resources Deve → United Minerals; 1979-12-01 to 1983-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Coal Processors Ltd → Daysville Tipple; 1983-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** United Minerals Et Al → Daysville Tipple; 1983-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United Minerals Et Al → Cumberland Coal Processors Ltd; 1983-01-26 to current/open; source msha-controller-operator-history