# Relationship history for MSHA mine 2700294

Current hierarchy: **Dominic  Cersosimo → Cersosimo Industries Inc → RIVER ROAD GRAVEL PIT**

- 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:** Dominic  Cersosimo → RIVER ROAD GRAVEL PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lawrence E  Thomas → RIVER ROAD GRAVEL PIT; 1989-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stub Inc → RIVER ROAD GRAVEL PIT; 1991-04-01 to 1992-10-07; source msha-controller-operator-history
- **controller_controls_operator:** Lawrence E  Thomas → Stub Inc; 1991-04-01 to 1992-10-07; source msha-controller-operator-history
- **operator_operates_mine:** Cersosimo Industries Inc → RIVER ROAD GRAVEL PIT; 1992-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dominic  Cersosimo → Cersosimo Industries Inc; 1992-10-08 to current/open; source msha-controller-operator-history