# Relationship history for MSHA mine 2901377

Current hierarchy: **Jose C  Garcia → E & R Contractors → E & R Contractors**

- 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:** E & R Roofing Company Inc → E & R Contractors; 1987-06-01 to 2007-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Eleuterio R  Garcia → E & R Contractors; 1987-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eleuterio R  Garcia → E & R Roofing Company Inc; 1987-06-01 to 2007-05-16; source msha-controller-operator-history
- **operator_operates_mine:** E & R Contractors → E & R Contractors; 2007-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jose C  Garcia → E & R Contractors; 2007-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose C  Garcia → E & R Contractors; 2007-05-17 to current/open; source msha-controller-operator-history