# Relationship history for MSHA mine 3002078

Current hierarchy: **Philbin Gerald J → Northeast Mines Inc → Northeast Mines Inc Pit & Mill**

- 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

- **operator_operates_mine:** Smithtown Sand & Gravel Corp → Northeast Mines Inc Pit & Mill; 1950-01-01 to 1978-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Smithtown Sand & Gravel Coporation → Northeast Mines Inc Pit & Mill; 1950-01-01 to 1978-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Smithtown Sand & Gravel Coporation → Smithtown Sand & Gravel Corp; 1950-01-01 to 1978-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Northeast Mines Inc → Northeast Mines Inc Pit & Mill; 1978-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Philbin Gerald J → Northeast Mines Inc Pit & Mill; 1978-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Philbin Gerald J → Northeast Mines Inc; 1978-10-02 to current/open; source msha-controller-operator-history