# Relationship history for MSHA mine 2002714

Current hierarchy: **Ashley  Anderson; Brad  Anderson → Bark River Concrete Products → Menominee County Pits**

- 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

- **controller_controls_mine:** Donald T  Van Enkevort → Menominee County Pits; 1980-07-01 to 2021-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Bark River Concrete Products → Menominee County Pits; 1984-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald T  Van Enkevort → Bark River Concrete Products; 1984-05-01 to 2021-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Ashley  Anderson et al → Menominee County Pits; 2021-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashley  Anderson et al → Bark River Concrete Products; 2021-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Anderson et al → Bark River Concrete Products; 2021-05-01 to current/open; source msha-controller-operator-history