# Relationship history for MSHA mine 3304596

Current hierarchy: **Mary J  Brown → Valley Mining Inc. → Countywide Clay**

- 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:** Mary J  Brown → Countywide Clay; 2000-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Valley Mining Inc. → Countywide Clay; 2008-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mary J  Brown → Valley Mining Inc.; 2008-01-03 to current/open; source msha-controller-operator-history