# Relationship history for MSHA mine 4300781

Current hierarchy: **Dominic  Cersosimo → Cersosimo Industries Inc. → Pioneer Cone**

- 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:** Dominic  Cersosimo → Pioneer Cone; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cersosimo Industries Inc. → Pioneer Cone; 2017-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dominic  Cersosimo → Cersosimo Industries Inc.; 2017-03-02 to current/open; source msha-controller-operator-history