# Relationship history for MSHA mine 5400299

Current hierarchy: **Ricardo  Cardona; Victor S  Maldonado → Master Products Corp → Quikrete**

- 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:** Master Products Corp → Quikrete; 1987-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ricardo  Cardona et al → Quikrete; 1987-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ricardo  Cardona et al → Master Products Corp; 1987-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Victor S  Maldonado  et al → Master Products Corp; 1987-11-01 to current/open; source msha-controller-operator-history