# Relationship history for MSHA mine 4407402

Current hierarchy: **Robert A  Crowder → BURNING KNOB RESOURCES INC. → Eagle 1**

- 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

- **controller_controls_mine:** John T  Quintrell → Eagle 1; 2019-09-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Civil LLC → Eagle 1; 2019-09-17 to 2020-05-25; source msha-controller-operator-history
- **controller_controls_operator:** John T  Quintrell → Civil LLC; 2019-09-17 to 2020-05-25; source msha-controller-operator-history
- **operator_operates_mine:** BURNING KNOB RESOURCES INC. → Eagle 1; 2020-05-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert A  Crowder → Eagle 1; 2020-05-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert A  Crowder → BURNING KNOB RESOURCES INC.; 2020-05-26 to current/open; source msha-controller-operator-history