# Relationship history for MSHA mine 5100161

Current hierarchy: **Knife River Corporation → West Hawaii Concrete Ltd → Jaw Plant**

- 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:** West Hawaii Concrete Ltd → Jaw Plant; 1950-01-01 to 2022-02-16; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clean James S → Jaw Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clean James S → West Hawaii Concrete Ltd; 1950-01-01 to 2022-02-16; source msha-controller-operator-history
- **controller_controls_mine:** MDU Resources Group Inc → Jaw Plant; 2001-07-19 to 2023-05-31; source msha-controller-operator-history
- **operator_operates_mine:** West Hawaii Concrete Ltd → Jaw Plant; 2022-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MDU Resources Group Inc → West Hawaii Concrete Ltd; 2022-02-17 to 2023-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Knife River Corporation → Jaw Plant; 2023-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Knife River Corporation → West Hawaii Concrete Ltd; 2023-06-01 to current/open; source msha-controller-operator-history