# Relationship history for MSHA mine 5400018

Current hierarchy: **Pedro  Feliciano → P R Aggregates Company Inc → P R  Aggregates Pit**

- 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 Aggregates Inc → P R  Aggregates Pit; 1950-01-01 to 1984-11-07; source msha-controller-operator-history
- **controller_controls_mine:** Rexach Construction Company → P R  Aggregates Pit; 1950-01-01 to 1984-11-07; source msha-controller-operator-history
- **controller_controls_operator:** Rexach Construction Company → Puerto Rico Aggregates Inc; 1950-01-01 to 1984-11-07; source msha-controller-operator-history
- **operator_operates_mine:** P R Aggregates Company Inc → P R  Aggregates Pit; 1984-11-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pedro  Feliciano → P R  Aggregates Pit; 1984-11-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pedro  Feliciano → P R Aggregates Company Inc; 1984-11-08 to current/open; source msha-controller-operator-history