# Relationship history for MSHA mine 2100582

Current hierarchy: **Kinyon Michael P → Kinyon Concrete Products → Red Wing 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:** Pepin Concrete Products Inc → Red Wing Pit; 1950-01-01 to 1979-03-04; source msha-controller-operator-history
- **controller_controls_mine:** Pepin Concrete Products Inc → Red Wing Pit; 1950-01-01 to 1979-03-04; source msha-controller-operator-history
- **controller_controls_operator:** Pepin Concrete Products Inc → Pepin Concrete Products Inc; 1950-01-01 to 1979-03-04; source msha-controller-operator-history
- **operator_operates_mine:** Kinyon Concrete Products → Red Wing Pit; 1979-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kinyon Michael P → Red Wing Pit; 1979-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kinyon Michael P → Kinyon Concrete Products; 1979-03-05 to current/open; source msha-controller-operator-history