# Relationship history for MSHA mine 1519404

Current hierarchy: **Paul M  Caldwell → Green Energy Holdings, LLC → Gibralter Slurry Recovery**

- 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:** Phillip F  Burden → Gibralter Slurry Recovery; 2004-09-29 to 2009-05-04; source msha-controller-operator-history
- **operator_operates_mine:** J & B Energy Incorporated → Gibralter Slurry Recovery; 2009-05-05 to 2009-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Phillip Brent  Burden → Gibralter Slurry Recovery; 2009-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phillip Brent  Burden → J & B Energy Incorporated; 2009-05-05 to 2009-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Phillip F  Burden → J & B Energy Incorporated; 2009-05-05 to 2009-05-04; source msha-controller-operator-history
- **operator_operates_mine:** Green Energy Holdings, LLC → Gibralter Slurry Recovery; 2009-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paul M  Caldwell et al → Gibralter Slurry Recovery; 2009-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul M  Caldwell et al → Green Energy Holdings, LLC; 2009-08-01 to current/open; source msha-controller-operator-history