# Relationship history for MSHA mine 4103739

Current hierarchy: **Andres  Gonzalez Saravia → Dos Republicas Coal → Eagle Pass Mine**

- 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:** Dos Republicas Resources Company Inc → Eagle Pass Mine; 1992-09-01 to 2011-02-06; source msha-controller-operator-history
- **controller_controls_mine:** Mexican-American Holding Company Inc → Eagle Pass Mine; 1992-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mexican-American Holding Company Inc → Dos Republicas Resources Company Inc; 1992-09-01 to 2011-02-06; source msha-controller-operator-history
- **operator_operates_mine:** Camino Real Fuels, LLC → Eagle Pass Mine; 2011-02-07 to 2021-01-11; source msha-controller-operator-history
- **controller_controls_mine:** NACCO Industries Inc → Eagle Pass Mine; 2011-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** NACCO Industries Inc → Camino Real Fuels, LLC; 2011-02-07 to 2021-01-11; source msha-controller-operator-history
- **operator_operates_mine:** Dos Republicas Coal → Eagle Pass Mine; 2021-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Andres  Gonzalez Saravia → Eagle Pass Mine; 2021-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andres  Gonzalez Saravia → Dos Republicas Coal; 2021-01-12 to current/open; source msha-controller-operator-history