# Relationship history for MSHA mine 3503598

Current hierarchy: **S-2 Contractors Inc → Newberg Rock & Dirt → Newberg Rock & Dirt**

- 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:** Newberg Rock & Dirt → Newberg Rock & Dirt; 2004-06-20 to 2011-06-23; source msha-controller-operator-history
- **controller_controls_mine:** Chris J Coleman et al → Newberg Rock & Dirt; 2004-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris J Coleman et al → Newberg Rock & Dirt; 2004-06-20 to 2011-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Marne  Coleman et al → Newberg Rock & Dirt; 2004-06-20 to 2011-06-23; source msha-controller-operator-history
- **operator_operates_mine:** Newberg Rock & Dirt → Newberg Rock & Dirt; 2011-06-24 to 2012-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Sharie  Thexton et al → Newberg Rock & Dirt; 2011-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sharie  Thexton et al → Newberg Rock & Dirt; 2011-06-24 to 2012-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Brian  Thexton et al → Newberg Rock & Dirt; 2011-06-24 to 2012-01-01; source msha-controller-operator-history
- **operator_operates_mine:** Newberg Rock & Dirt → Newberg Rock & Dirt; 2012-01-02 to 2012-12-05; source msha-controller-operator-history
- **controller_controls_operator:** Marne  Coleman et al → Newberg Rock & Dirt; 2012-01-02 to 2012-12-05; source msha-controller-operator-history
- **controller_controls_operator:** Chris J Coleman et al → Newberg Rock & Dirt; 2012-01-02 to 2012-12-05; source msha-controller-operator-history
- **operator_operates_mine:** Newberg Rock & Dirt → Newberg Rock & Dirt; 2012-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** S-2 Contractors Inc → Newberg Rock & Dirt; 2012-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** S-2 Contractors Inc → Newberg Rock & Dirt; 2012-12-06 to current/open; source msha-controller-operator-history