# Relationship history for MSHA mine 0404415

Current hierarchy: **Apostol Chris → Chris Apostol & Associates → Iron Door**

- 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:** Luken Mining Corp → Iron Door; 1980-05-01 to 1982-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Kenrell Resources Ltd → Iron Door; 1980-05-01 to 1982-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Kenrell Resources Ltd → Luken Mining Corp; 1980-05-01 to 1982-05-09; source msha-controller-operator-history
- **operator_operates_mine:** Iron Door Mines → Iron Door; 1982-05-10 to 1983-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Wurzburger Steve R Et Al → Iron Door; 1982-05-10 to 1983-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Wurzburger Steve R Et Al → Iron Door Mines; 1982-05-10 to 1983-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Chris Apostol & Associates → Iron Door; 1983-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Apostol Chris → Iron Door; 1983-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Apostol Chris → Chris Apostol & Associates; 1983-10-02 to current/open; source msha-controller-operator-history