# Relationship history for MSHA mine 3003294

Current hierarchy: **Roderick J  Valente → R J Valente Gravel → RT 9 #18**

- 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:** Roderick J  Valente → RT 9 #18; 1990-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R J Valente Gravel → RT 9 #18; 1999-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roderick J  Valente → R J Valente Gravel; 1999-07-01 to current/open; source msha-controller-operator-history