# Relationship history for MSHA mine 3609396

Current hierarchy: **Randy  Cole → Northstar Stone Inc. → Northstar 2**

- 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:** Windwood Quarrys → Northstar 2; 2006-03-14 to 2016-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Larry R  Forrest → Northstar 2; 2006-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry R  Forrest → Windwood Quarrys; 2006-03-14 to 2016-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Cole → Northstar 2; 2015-04-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Northstar Stone Inc. → Northstar 2; 2016-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Cole → Northstar Stone Inc.; 2016-05-09 to current/open; source msha-controller-operator-history