# Relationship history for MSHA mine 2902248

Current hierarchy: **Randy J  Sena → Sena Construction → Sena 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Tony A  Sena et al → Sena Pit; 1985-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Riverside Constr. Co. Inc → Sena Pit; 2003-03-04 to 2006-01-11; source msha-controller-operator-history
- **controller_controls_operator:** Tony A  Sena et al → Riverside Constr. Co. Inc; 2003-03-04 to 2006-01-11; source msha-controller-operator-history
- **controller_controls_operator:** George I  Sena et al → Riverside Constr. Co. Inc; 2003-03-04 to 2006-01-11; source msha-controller-operator-history
- **operator_operates_mine:** Sena Construction → Sena Pit; 2006-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy J  Sena → Sena Pit; 2006-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy J  Sena → Sena Construction; 2006-01-12 to current/open; source msha-controller-operator-history