# Relationship history for MSHA mine 0504056

Current hierarchy: **Bartz Russell → Aggregate Sand & Soil Inc → Aggregate Sand And Soil 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:** E & R Aggregate & Concrete Paving Company Inc → Aggregate Sand And Soil Incorporated; 1985-06-01 to 1989-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Dakolios Ernest R Jr → Aggregate Sand And Soil Incorporated; 1985-06-01 to 1989-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Dakolios Ernest R Jr → E & R Aggregate & Concrete Paving Company Inc; 1985-06-01 to 1989-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Aggregate Sand & Soil Inc → Aggregate Sand And Soil Incorporated; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bartz Russell → Aggregate Sand And Soil Incorporated; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bartz Russell → Aggregate Sand & Soil Inc; 1990-01-01 to current/open; source msha-controller-operator-history