# Relationship history for MSHA mine 5400389

Current hierarchy: **Pablo F  Del Valle Rivera → Dorado Quarry And Recycling Corp → Agregados 24**

- 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:** Puerto Rico Crushing Corp → Agregados 24; 1996-06-01 to 2006-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Devcon International Corp et al → Agregados 24; 1996-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Devcon International Corp et al → Puerto Rico Crushing Corp; 1996-06-01 to 2006-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Professional Rock Crushing Corp → Agregados 24; 2006-07-01 to 2010-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Jose F (Vazquez)  Criado  et al → Agregados 24; 2006-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose F (Vazquez)  Criado  et al → Professional Rock Crushing Corp; 2006-07-01 to 2010-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Agregados 24 → Agregados 24; 2010-08-01 to 2013-10-28; source msha-controller-operator-history
- **controller_controls_mine:** Jose F (Vazquez)  Criado  et al → Agregados 24; 2010-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose F (Vazquez)  Criado  et al → Agregados 24; 2010-08-01 to 2013-10-28; source msha-controller-operator-history
- **operator_operates_mine:** Dorado Quarry And Recycling Corp → Agregados 24; 2013-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pablo F  Del Valle Rivera → Agregados 24; 2013-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pablo F  Del Valle Rivera → Dorado Quarry And Recycling Corp; 2013-10-29 to current/open; source msha-controller-operator-history