# Relationship history for MSHA mine 3609663

Current hierarchy: **Christopher J Insinger → Insinger Inc. → Ward 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:** E.A. Ward Excavating → Ward Quarry; 2008-09-14 to 2010-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Elgene A  Ward → Ward Quarry; 2008-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elgene A  Ward → E.A. Ward Excavating; 2008-09-14 to 2010-12-19; source msha-controller-operator-history
- **controller_controls_mine:** John  Insinger → Ward Quarry; 2009-05-15 to 2024-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Keystone Rock & Excavating LLC → Ward Quarry; 2010-12-20 to 2013-10-06; source msha-controller-operator-history
- **controller_controls_mine:** Expand Energy Corporation → Ward Quarry; 2010-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Expand Energy Corporation → Keystone Rock & Excavating LLC; 2010-12-20 to 2013-10-06; source msha-controller-operator-history
- **operator_operates_mine:** Insinger Inc. → Ward Quarry; 2013-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Insinger → Insinger Inc.; 2013-10-07 to 2024-02-07; source msha-controller-operator-history
- **controller_controls_mine:** Christopher J Insinger → Ward Quarry; 2024-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher J Insinger → Insinger Inc.; 2024-02-08 to current/open; source msha-controller-operator-history