# Relationship history for MSHA mine 1519013

Current hierarchy: **John T  Quintrell → Civil, LLC → Hartridge**

- 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

- **controller_controls_mine:** Gary  Asher → Hartridge; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Appolo Fuels Inc → Hartridge; 2006-04-25 to 2019-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Asher → Appolo Fuels Inc; 2006-04-25 to 2019-10-01; source msha-controller-operator-history
- **controller_controls_mine:** John T  Quintrell → Hartridge; 2019-09-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Civil, LLC → Hartridge; 2019-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John T  Quintrell → Civil, LLC; 2019-10-02 to current/open; source msha-controller-operator-history