# Relationship history for MSHA mine 2101742

Current hierarchy: **Tim P  Erickson → Midcon Paving Inc → Midcon Paving 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Atkinson Blacktop Service Inc → Midcon Paving Incorporated; 1950-01-01 to 1988-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Atkinson James D Jr → Midcon Paving Incorporated; 1950-01-01 to 1988-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Atkinson James D Jr → Atkinson Blacktop Service Inc; 1950-01-01 to 1988-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Midcon Paving Inc → Midcon Paving Incorporated; 1988-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tim P  Erickson → Midcon Paving Incorporated; 1988-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim P  Erickson → Midcon Paving Inc; 1988-08-11 to current/open; source msha-controller-operator-history