# Relationship history for MSHA mine 5400344

Current hierarchy: **Aponte Lorenzo & Juan C → D J Aggregates Inc → D J Aggregates Incorporated**

- 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:** Caguas Equipment Rental Inc → D J Aggregates Incorporated; 1992-09-01 to 1993-07-01; source msha-controller-operator-history
- **controller_controls_mine:** Puerto Rico Each Work Inc → D J Aggregates Incorporated; 1992-09-01 to 1993-07-01; source msha-controller-operator-history
- **controller_controls_operator:** Puerto Rico Each Work Inc → Caguas Equipment Rental Inc; 1992-09-01 to 1993-07-01; source msha-controller-operator-history
- **operator_operates_mine:** D J Aggregates Inc → D J Aggregates Incorporated; 1993-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Aponte Lorenzo & Juan C → D J Aggregates Incorporated; 1993-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aponte Lorenzo & Juan C → D J Aggregates Inc; 1993-07-02 to current/open; source msha-controller-operator-history