# Relationship history for MSHA mine 3609356

Current hierarchy: **John  Heeman III → Heeman Quarry Inc → Cadis Quarry**

- 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:** John  Heeman Jr → Cadis Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Heeman Jr → Cadis Quarry; 1997-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bradford Quarries → Cadis Quarry; 2005-08-02 to 2008-08-27; source msha-controller-operator-history
- **controller_controls_operator:** John  Heeman Jr → Bradford Quarries; 2005-08-02 to 2008-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Heeman Quarries Inc → Cadis Quarry; 2008-08-28 to 2010-05-24; source msha-controller-operator-history
- **controller_controls_operator:** John  Heeman Jr → Heeman Quarries Inc; 2008-08-28 to 2010-05-24; source msha-controller-operator-history
- **operator_operates_mine:** Heeman Quarry Inc → Cadis Quarry; 2010-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Heeman III → Cadis Quarry; 2010-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Heeman III → Heeman Quarry Inc; 2010-05-25 to current/open; source msha-controller-operator-history