# Relationship history for MSHA mine 3608805

Current hierarchy: **Randy  Cole → North Star Stone Inc. → North Star Midway 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Dunn Flagstone → North Star Midway Quarry; 1999-04-01 to 2001-09-24; source msha-controller-operator-history
- **controller_controls_mine:** Scott A  Dunn → North Star Midway Quarry; 1999-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott A  Dunn → Dunn Flagstone; 1999-04-01 to 2001-09-24; source msha-controller-operator-history
- **controller_controls_mine:** Lester  West → North Star Midway Quarry; 2001-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lester West Flag Stone → North Star Midway Quarry; 2001-09-25 to 2010-02-17; source msha-controller-operator-history
- **controller_controls_operator:** Lester  West → Lester West Flag Stone; 2001-09-25 to 2010-02-17; source msha-controller-operator-history
- **operator_operates_mine:** L.W. Flagstone → North Star Midway Quarry; 2010-02-18 to 2021-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Lester  West → North Star Midway Quarry; 2010-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lester  West → L.W. Flagstone; 2010-02-18 to 2021-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Cole → North Star Midway Quarry; 2015-04-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** North Star Stone Inc. → North Star Midway Quarry; 2021-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Cole → North Star Stone Inc.; 2021-10-14 to current/open; source msha-controller-operator-history