# Relationship history for MSHA mine 5400285

Current hierarchy: **Luis R  Colon → Bloques Colon → Agregados RC**

- 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:** Bloques Colon → Agregados RC; 1985-10-01 to 2008-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Luis R  Colon → Agregados RC; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Luis R  Colon → Bloques Colon; 1985-10-01 to 2008-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Agregados Ecologicos Del Norte Inc → Agregados RC; 2008-06-04 to 2009-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Rafael J  Ondine  et al → Agregados RC; 2008-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rafael J  Ondine  et al → Agregados Ecologicos Del Norte Inc; 2008-06-04 to 2009-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Jose  Mercado  et al → Agregados Ecologicos Del Norte Inc; 2008-06-04 to 2009-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Bloques Colon → Agregados RC; 2009-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Luis R  Colon → Bloques Colon; 2009-07-01 to current/open; source msha-controller-operator-history