# Relationship history for MSHA mine 3609690

Current hierarchy: **John  Heeman → John Heeman → Heeman & Kipar 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

- **operator_operates_mine:** Malandri Flagstone Inc → Heeman & Kipar Quarry; 2008-12-10 to 2013-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Thomas T  Malandri → Heeman & Kipar Quarry; 2008-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas T  Malandri → Malandri Flagstone Inc; 2008-12-10 to 2013-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Cole → Heeman & Kipar Quarry; 2010-03-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ranwood, Inc. → Heeman & Kipar Quarry; 2013-06-04 to 2015-04-03; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Cole → Ranwood, Inc.; 2013-06-04 to 2015-04-03; source msha-controller-operator-history
- **operator_operates_mine:** Northstar Stone Inc. → Heeman & Kipar Quarry; 2015-04-04 to 2026-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Cole → Heeman & Kipar Quarry; 2015-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Cole → Northstar Stone Inc.; 2015-04-04 to 2026-07-07; source msha-controller-operator-history
- **controller_controls_mine:** John  Heeman → Heeman & Kipar Quarry; 2025-03-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** John Heeman → Heeman & Kipar Quarry; 2026-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Heeman → John Heeman; 2026-07-08 to current/open; source msha-controller-operator-history