# Relationship history for MSHA mine 4103808

Current hierarchy: **Manuel  Higareda → Higareda → Higareda**

- 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

- **operator_operates_mine:** Avila Mine → Higareda; 1994-04-01 to 2012-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Arturo  Avila → Higareda; 1994-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arturo  Avila → Avila Mine; 1994-04-01 to 2012-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Higareda → Higareda; 2012-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Manuel  Higareda → Higareda; 2012-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Manuel  Higareda → Higareda; 2012-03-15 to current/open; source msha-controller-operator-history